D2.Geo.12.9-12: Evaluating the Consequences of Catastrophes: The Irish Famine and Chernobyl
In plain English: D2.Geo.12.9-12 is the C3 Framework geography indicator for grades 9-12 that asks students to evaluate how natural and human-made catastrophes affect global trade, politics and human migration. Students weigh which consequences were large or small, short or lasting, local or global, and how strong the evidence is. It is usually taught in high school world geography or world history.
Evaluate the consequences of human-made and natural catastrophes on global trade, politics, and human migration.
C3 Framework for Social Studies (NCSS) · Dimension 2: Applying Disciplinary Concepts and Tools · Discipline: Geography · Global Interconnections: Changing Spatial Patterns · Official standard
D2.Geo.12.9-12 asks students to evaluate the consequences of natural and human-made catastrophes for three things: global trade, politics and human migration. A catastrophe is a sudden disaster that causes great damage or loss of life. A natural catastrophe starts with a force of nature (an earthquake, a drought, a plant disease); a human-made catastrophe starts with human action or error (an industrial accident, a war, a dam failure). Evaluating consequences means judging them, not just listing them: how large, how long-lasting, how far-reaching, and how well documented.
Students compare two cases a century and a half apart. The Irish Famine began when a potato blight (a plant disease) destroyed Ireland's main food crop in 1845; students read a British Treasury official's account from 1848 and an Irish historian's account that quotes a Dublin committee's protests of 1845, and they use U.S. Census data on Irish-born Americans. The Chernobyl accident of 1986 destroyed a Soviet nuclear reactor; students read a U.S. Nuclear Regulatory Commission summary and study a map of the region. Students judge each consequence, and they also consider how far the famine was natural and how far its effects were shaped by human decisions, a question the sources answer in different ways.
Learning Objectives
By the end of this lesson, students will be able to:
Distinguish natural from human-made catastrophes and explain why some cases combine both.
Identify consequences of a catastrophe for global trade, politics and migration in primary sources and data.
Evaluate consequences by their size, duration, reach and the strength of the evidence, using quantitative data.
Compare two catastrophes and defend a judgment about which kinds of consequences were most significant, noting different viewpoints in the sources.
Prior Knowledge Required
Students should already be comfortable with:
Evaluating how globalization and scarce resources lead to conflict and cooperation D2.Geo.11.9-12
Analyzing multiple and complex causes and effects of events in the past D2.His.14.9-12
Computing ratios and percent changes and reading a bar chart
"Think of a disaster you have studied or read about, anywhere in the world. Name one effect it had on people who lived far away from where it happened."
List answers and sort them into three columns: trade (what is bought and sold, and where), politics (laws, governments, relations between countries) and migration (people moving). Ask which effects lasted days and which lasted decades. Tell students that today they will judge consequences, not just name them.
Direct Instruction15 minutes
Part 1: Terms. A blight is a plant disease. A famine is a severe shortage of food that causes widespread hunger and death. Duties are taxes on goods; Britain's Corn Laws placed duties on imported grain ("corn" in British usage meant grain of all kinds, and "Indian corn" meant maize), and its Navigation Laws limited the carrying of goods by foreign ships. Freight is the price of shipping goods. A remittance is money that migrants send home. An evacuation is an organized removal of people from danger, and an exclusion zone is an area people may not enter or live in.
Part 2: Four tests for a consequence. Write on the board: Size (how many people or how much trade?), Duration (weeks, years or generations?), Reach (local, national or global?), Evidence (what source shows it, and who wrote it?). Students apply the tests to every consequence today. Then show Table 1 and Diagram 1.
Table 1. People born in Ireland living in the United States (real data: U.S. Census Bureau, Working Paper No. 29, Table 4)
Census year
Born in Ireland
All foreign-born residents
1850
961,719
2,244,602
1860
1,611,304
4,138,697
1870
1,855,827
5,567,229
1890
1,871,509
9,249,547
1930
744,810 (Irish Free State only)
14,204,149
Natural or human-made?
Classify the event that began each case, using the first paragraph of Source 4 and the last paragraph of Source 1.
Result: Chernobyl began with a human-made event: "a sudden surge of power during a reactor systems test." The Irish case began with a natural event: the potato blight of 1845. Whether the famine that followed was only natural is a separate question, which Sources 1 and 3 answer differently.
Measuring a migration
Use Table 1. What share of all foreign-born U.S. residents in 1850 had been born in Ireland?
Result: 961,719 ÷ 2,244,602 ≈ 0.428, about 43%. People born in Ireland were the largest group from any single country among the immigrants counted in 1850.
Measuring a shock to trade
Source 1, paragraph 1, says shipping flour from the United States usually cost 2s. 6d. to 3s. 6d. a barrel, but in winter 1846-7 it rose to 9s. Using the higher usual rate, how many times as much was that? (1 shilling = 12 pence.)
Result: 3s. 6d. = 42 pence and 9s. = 108 pence; 108 ÷ 42 ≈ 2.6, so freight cost about 2.6 times the usual rate. A catastrophe in one country raised shipping costs on routes across the Atlantic.
Measuring a forced move
Source 4, paragraph 3, says officials closed the area within 30 kilometers of the plant. About how large is a circle with a 30-kilometer radius?
Result: π × 30² ≈ 3.14 × 900 ≈ 2,827 square kilometers, larger than the state of Rhode Island (about 2,700 square kilometers of land). Everyone without official business had to leave it.
Guided Practice20 minutes
Read Sources 1 and 3: two views of the Irish catastrophe. Source 1 is by Charles Trevelyan, the British Treasury official in charge of famine relief, writing in 1848. Source 3 is by John O'Rourke, an Irish priest and historian writing in the 1870s, who quotes resolutions passed by a committee of prominent citizens meeting at the Mansion House in Dublin in November 1845. Words to know: exigent means urgent; freights are shipping charges; relaxation of duties means lowering them; the sanction of the Legislature is Parliament's approval; to arraign is to accuse formally; culpable means deserving blame; efficacious means effective; pecuniary means having to do with money; convoys are groups of carts or ships traveling together. Paragraph numbers count only the paragraphs shown.
1Among the numerous causes which enhanced the difficulty of obtaining adequate foreign supplies at moderate rates during the most exigent period of the winter of 1846-7, one of the most embarrassing, was the sudden and extraordinary advance in freights, which occurred simultaneously in the ports of the United States of America, the Mediterranean, and the Black Sea. Vessels were not obtainable in the Black Sea and the Danube at less than 18s. and 22s. per quarter for corn, whereas the usual rates are 9s. and 11s.; while in the United States, where large shipments of grain, flour, and Indian corn, were going forward to Europe, the comparatively limited number of vessels caused the rates to run up to 9s. per barrel for flour, and 16s. and 18s. per quarter for Indian corn to British ports, the rates usually given being 2s. 6d. to 3s. 6d. per barrel of flour, and 8s. and 9s. per quarter for Indian corn.
2On the 27th January, 1846, Sir Robert Peel proposed his measure for the relaxation of the duties on the importation of foreign corn, by which the scale of duties payable on wheat was to range from 4s. to 10s. per quarter, and Indian corn, which had previously been charged with the same duty as barley, was to pay only 1s. a-quarter. This was to last till February 1849, when an uniform duty of 1s. a-quarter was to be charged on every description of grain. The bill passed the House of Lords on the 29th June, 1846; and Sir R. Peel announced his resignation in the House of Commons on the same day.
3Immediately on the meeting of Parliament in January, 1847, Lord J. Russell introduced bills to suspend until the 1st September, 1847, the duties on foreign corn, and the restrictions imposed by the Navigation Laws on the importation of corn in foreign vessels; and he at the same time moved a resolution permitting the use of sugar in breweries; all which measures received the sanction of the Legislature. At the close of the same session, the suspension of the Corn and Navigation Laws was extended to the 1st March, 1848.
4On the first appearance of the blight in the autumn of 1845, Professors Kane, Lindley, and Playfair, were appointed by Sir Robert Peel to inquire into the nature of it, and to suggest the best means of preserving the stock of potatoes from its ravages. The result showed that the mischief lay beyond the knowledge and power of man. Every remedy which science or experience could dictate was had recourse to, but the potato equally melted away under the most opposite modes of treatment.
Charles E. Trevelyan, The Irish Crisis: on grain freights, the Corn Laws and the potato blight (Source 1) (1848). Public domain (published 1848). Source text.
1Meantime the accounts of the progress of the disease were every day more disheartening; the Government appeared to do nothing except publish a few reports from those "Scientific men sent over from England," alluded to by the Viceroy in his reply to the deputation of the 3rd of November. The Mansion House Committee met on the 19th of that month and unanimously passed the following resolutions, Lord Cloncurry being in the chair:--
[...]
25. "That we arraign in the strongest terms, consistent with personal respect to ourselves, the culpable conduct of the present administration, as well in refusing to take any efficacious measure for alleviating the existing calamity with all its approaching hideous and necessary consequences; as also for the positive and unequivocal crime of keeping the ports closed against the importation of foreign provisions, thus either abdicating their duty to the people or their sovereign, whose servants they are, or involving themselves in the enormous guilt of aggravating starvation and famine, by unnaturally keeping up the price of provisions, and doing this for the benefit of a selfish class who derive at the present awful crisis pecuniary advantages to themselves by the maintenance of the oppressive Corn Laws.
36. "That the people of Ireland, in their bitter hours of misfortune, have the strongest right to impeach the criminality of the ministers of the crown, inasmuch as it has pleased a merciful Providence to favour Ireland in the present season with a most abundant crop of oats. Yet, whilst the Irish harbours are closed against the importation of foreign food, they are left open for the exportation of Irish grain, an exportation which has already amounted in the present season to a quantity nearly adequate to feed the entire people of Ireland, and to avert the now certain famine; thus inflicting upon the Irish people the abject misery of having their own provisions carried away to feed others, whilst they themselves are left contemptuously to starve.
[...]
4[...] At Youghal two ships laden with corn for exportation were stopped by the people, and for some time prevented from sailing. [...] Horses engaged in carrying corn to the coast for exportation were sometimes shot. In a few places, especially in Connaught, convoys of meal and flour were seized and carried off.
John O'Rourke, The History of the Great Irish Famine of 1847: the Mansion House Committee resolutions of November 1845 and food riots of 1846 (Source 3) (1875; this edition 1902). Public domain (published 1902). Source text.
Trade. In Source 1, paragraph 1, students list the three sea regions where freight rates rose and explain why higher freights mattered to a country that needed to import food.
Politics. In Source 1, paragraphs 2 and 3, students mark each government action and its date, then decide which tests (size, duration, reach) each action passes.
Two viewpoints. Students compare what Source 1, paragraph 4, says about the blight with what Source 3, paragraphs 2 and 3, say about the government. Prompt: what is each writer's position, and how might it shape what he emphasizes?
Conflict at home. Students find the events in Source 3, paragraph 4, and explain how they connect a food crisis to trade.
Independent Practice15 minutes
Read Sources 2 and 4: migration from Ireland, and Chernobyl. Source 2 is from the same 1848 book as Source 1. Source 4 is from the U.S. Nuclear Regulatory Commission (NRC), the federal agency that regulates nuclear power plants. Words to know: apportionment means dividing up; absorb means take in; destitute means without money or food; small holders are farmers renting small plots; boron is an element that slows nuclear reactions; the sarcophagus is the concrete shell built over the reactor; NUREG is the name of an NRC report series.
Students write an evaluative paragraph of 6-8 sentences: "Which had the larger consequences for human migration, the Irish Famine or the Chernobyl accident? Judge size, duration and reach." They must use Table 1 or Diagram 1, Source 2 and Source 4, and cite paragraphs.
1In the autumn and winter of 1846 efforts were made to induce the Government to take an active part in assisting emigration by an apportionment of the expense of passage and outfit between the public, the landlords, and the emigrants themselves; but, on a full consideration of the subject, it appeared that the emigration about to take place in the ensuing season to Canada and the United States, without any assistance from the public, was likely to be quite as large as those countries could properly absorb [...]. It is also a point of primary importance, that those persons should emigrate, who, from age, health, character, and circumstances, are best able to contend with the hardships and difficulties of a settler’s life, and it was considered that this object would be most fully attained if the emigration were entirely voluntary. [...] For these reasons Her Majesty’s Ministers determined to confine themselves to taking increased securities for the safety of the emigrants during their voyage, and their early and satisfactory settlement after their arrival abroad. [...]
2Early in the year 1847 the roads to the Irish sea-ports were thronged with families hastening to escape the evils which impended over their native land. The complaint in Ireland, at the time, was, that those who went belonged to the best and most substantial class of the agricultural population. The complaint afterwards in Canada was that those who came were the helpless and destitute. The fact was, that the emigrants generally belonged to that class of small holders, who, being somewhat above the level of the prevailing destitution, had sufficient resources left to enable them to make the effort required to effect their removal to a foreign land; and the steps taken by them to convert their property into an available form, had for months before been the subject of observation. Large remittances, estimated to amount to 200,000ℓ. in the year ending on the 30th March, 1847, were also made by the Irish emigrants settled in the United States and the British North American provinces, to enable their relations in Ireland to follow them. The emigration of 1846 from the United Kingdom, which was the largest ever known up to that time, amounted to 129,851 persons; the emigration of the first three quarters of 1847 was 240,461; and almost the whole of it was from Ireland to Canada and the United States.
3Even this does not represent the full extent of the outpouring of the population of Ireland which took place in this eventful year. From the 13th January to the 1st November, 278,005 immigrants arrived at Liverpool from Ireland, of whom only 122,981 sailed from that port to foreign countries. [...]
Charles E. Trevelyan, The Irish Crisis: on emigration in 1846-1847 (Source 2) (1848). Public domain (published 1848). Source text.
1On April 26, 1986, a sudden surge of power during a reactor systems test destroyed Unit 4 of the nuclear power station at Chernobyl, Ukraine, in the former Soviet Union. The accident and the fire that followed released massive amounts of radioactive material into the environment.
2Emergency crews responding to the accident used helicopters to pour sand and boron on the reactor debris. [...] A few weeks after the accident, the crews completely covered the damaged unit in a temporary concrete structure, called the “sarcophagus,” to limit further release of radioactive material. [...] The Soviet nuclear power authorities presented their initial accident report to an International Atomic Energy Agency meeting in Vienna, Austria, in August 1986.
3After the accident, officials closed off the area within 30 kilometers (18 miles) of the plant, except for persons with official business at the plant and those people evaluating and dealing with the consequences of the accident and operating the undamaged reactors. The Soviet (and later on, Russian) government evacuated about 115,000 people from the most heavily contaminated areas in 1986, and another 220,000 people in subsequent years (Source: UNSCEAR 2008, pg. 53).
[...]
4The Chernobyl accident contaminated wide areas of Belarus, the Russian Federation, and Ukraine inhabited by millions of residents. [...]
[...]
5The NRC published the second phase’s results in April 1989 as NUREG-1251, “Implications of the Accident at Chernobyl for Safety Regulation of Commercial Nuclear Power Plants in the United States.” The agency concluded that the lessons learned from Chernobyl fell short of requiring immediate changes in the NRC's regulations.
U.S. Nuclear Regulatory Commission, Backgrounder on Chernobyl Nuclear Power Plant Accident, selected paragraphs (Source 4) (2026). US government work (17 U.S.C. 105). Source text.
Closure10 minutes
Exit ticket. "Of the three areas in the standard (global trade, politics, migration), which did today's sources show most clearly for each catastrophe, and which was hardest to judge from these sources? Give one reason."
Teacher note on sensitive history. The Irish Famine caused very great loss of life, and writers have disagreed ever since about how much the British government's policies made it worse; the question is still debated, so present it as an interpretation and attribute each view to its source. Some historians stress that relief policy, continued food exports and the belief that private trade should supply food deepened the disaster; others stress the unprecedented scale of crop failures repeated over several years and the limits of what a government of the 1840s could do. Students may argue either side; score the evidence and reasoning, not the position. Source 1's author directed the relief effort. In the closing pages of the same essay (not quoted here), Trevelyan wrote that Ireland's "deep and inveterate root of social evil" had been "laid bare by a direct stroke of an all-wise and all-merciful Providence," a "sharp but effectual" remedy. Historians often cite this passage when criticizing his outlook, and many readers, especially those with family ties to the famine, find it callous. Treat it as evidence of how Trevelyan understood the famine in religious and economic terms, without debating the belief itself. Source 3, resolution 6, uses "Providence" differently, to give thanks for a good oat harvest. Source 3 was written by an Irish historian a generation later, and the resolutions it quotes were political protests: imported grain was taxed, not banned, so "keeping the ports closed" was the protesters' phrase for keeping the grain duties, and the size of the grain exports is the committee's own estimate. Neither source is neutral. On dates: Source 1 puts the House of Lords vote and Peel's resignation on the same day, 29 June 1846. Parliamentary records show the Lords passed the bill on 25 June, the same night the Commons defeated Peel's Irish coercion bill, and Peel announced his resignation on 29 June. For Chernobyl, Source 4 gives official evacuation figures (the fact sheet's health-effects section is left out here) and does not cover trade; note that gap rather than filling it with guesses. Avoid connecting either case to current conflicts.
Differentiation Strategies
For Struggling Students
Give a 2 × 3 organizer (two catastrophes; trade, politics, migration) with one cell filled in as a model.
Read Source 1, paragraph 2, and Source 4, paragraph 3, aloud, and work through the money units together (12 pence to a shilling).
Offer the frame: "The largest consequence of ___ was ___, because it affected ___ people for ___ years across ___."
For Advanced Students
Use Table 1 to estimate how long the effect of the famine on the Irish-born population of the United States lasted, and explain what other causes could have kept immigration from Ireland high after the 1850s.
Find the NRC report NUREG-1251 named in Source 4 and evaluate whether its conclusion counts as a large or a small political consequence for the United States.
Choose a third catastrophe and find official sources on its consequences for trade, politics and migration. Rank its consequences against the two cases studied here.
Assessment Guidance
What to Look For
Strong answers evaluate consequences with the four tests (size, duration, reach, evidence), use numbers from the sources or data, cover all three areas the standard names and both kinds of catastrophe, and attribute claims to their authors. They notice where the evidence is thin, such as the lack of trade information for Chernobyl in Source 4. Watch for answers that treat Trevelyan or the Mansion House resolutions as neutral, that list consequences without judging them, or that confuse remittances or freight with migration itself.
02
Classroom Activities
3 Activities
1
Consequence Web: Scoring Each Consequence
20 minGroups of 4
Each group draws two webs, one per catastrophe, with three branches: global trade, politics and migration. Students find a consequence in each source location listed below, write it on a sticky note in their own words, place it on the right branch, and score it from 1 to 3 on each of the four tests (size, duration, reach, evidence).
The 8 Source Locations
Source 1, paragraph 1
Source 1, paragraph 2
Source 1, paragraph 3
Source 2, paragraph 2
Source 3, paragraph 4
Table 1 (1850-1890)
Source 4, paragraph 2
Source 4, paragraphs 3-4
Scoring Guide
Size: 1 = a few people or one shipment, 3 = hundreds of thousands of people or a whole country's trade. Duration: 1 = weeks, 3 = a generation or more. Reach: 1 = one district, 3 = several countries or continents. Evidence: 1 = one writer's claim, 3 = official figures or two sources that agree. A consequence's total runs from 4 to 12.
Answer Key (expected placements)
Locations 1-3 belong on the Irish web: location 1 on the trade branch, locations 2 and 3 on both trade and politics. Locations 4 and 6 belong on the migration branch; location 5 on politics (conflict at home) linked to trade. Locations 7 and 8 belong on the Chernobyl web: 7 on politics (an international meeting), 8 on migration and politics. Scores will vary; accept any score the group can defend with the source's numbers or wording. Expect students to notice that the Chernobyl web has no trade branch from these sources.
Discussion
Ask: which single consequence scored highest, and why? Did the natural or the human-made catastrophe produce longer-lasting consequences in these sources? Where were the scores for evidence lowest, and what source would raise them?
2
Data Lab: How Long Did the Migration Last?
15 minPairs
Pairs use Table 1 and Diagram 1 to judge the duration of the famine's effect on migration, using two different measures.
Tasks
By what percent did the Irish-born population of the United States change from 1860 to 1890?
What share of all foreign-born residents was Irish-born in 1860, and in 1890?
The number stayed high while the share fell. Write two sentences explaining how both can be true, and what each measure says about how long the famine's consequences lasted.
Name one other cause, besides the famine, that could explain migration from Ireland after 1860, and what evidence you would need.
Answer Key
1. (1,871,509 - 1,611,304) ÷ 1,611,304 ≈ 0.161, an increase of about 16%. 2. 1860: 1,611,304 ÷ 4,138,697 ≈ 38.9%; 1890: 1,871,509 ÷ 9,249,547 ≈ 20.2%. 3. Irish-born numbers held near 1.6-1.9 million from 1860 to 1900, but immigrants from other countries grew much faster, so the Irish share fell. The number suggests the movement begun in the famine years continued for decades; the share shows it became one stream among many. 4. Answers vary, for example later crop failures or jobs in growing American cities; students should name the evidence that would test the cause.
3
Simulation: The Olvidra Emergency Council
15 minGroups of 4 (four roles)
This is an invented scenario with an invented country and invented numbers. A volcanic eruption (natural) on the island nation of Olvidra buries farmland in ash and damages the main port; at the port, a fire spreads to a fertilizer warehouse and releases smoke that forces the town nearby to be evacuated (human-made). Students take four roles: Olvidra's government, a neighboring government, a shipping company and a group of farm families. The council must decide on three questions: whether to ban food exports, whether to accept outside help with conditions, and whether to help families resettle abroad.
Fact Sheet (invented)
Population 2,000,000. Exports last year: $800 million, half of them farm goods. Experts expect exports to fall to $500 million this year. A survey says 6% of the population plans to leave within a year.
Tasks
By what percent are exports expected to fall? How many people plan to leave?
Debate for 8 minutes and record the council's three decisions.
For each decision, predict one consequence for trade, politics or migration, and score it with the four tests.
Compare your council's choices with the actions in Sources 1 and 2. Which choices are similar, and which differ?
Answer Key
1. (800 - 500) ÷ 800 = 0.375, a 37.5% fall; 6% of 2,000,000 = 120,000 people. 2-4. Answers vary. Look for predictions that follow from the decisions (an export ban keeps food at home but cuts income and may anger trading partners; aid with conditions can bring political tension or cooperation; resettlement help moves people faster but may strain receiving countries) and comparisons that cite the sources accurately.
03
Diagrams & Visual Aids
2 diagrams
Diagram 1: People Born in Ireland Living in the United States, 1850-1930
Real data: U.S. Census Bureau, Historical Census Statistics on the Foreign-born Population of the United States: 1850-1990 (Working Paper No. 29, Gibson and Lennon, 1999), Table 4. Bars are drawn to scale. Through 1920 the figure covers the whole island of Ireland; the 1930 figure covers the Irish Free State only, because the census counted people born in Northern Ireland separately that year.
Diagram 2: Chernobyl: A Disaster at a Border
Town and zone points come from the National Geospatial-Intelligence Agency's GEOnet Names Server, which lists Prypiat and Chornobyl as abandoned populated places and gives a point for the Chornobyl Exclusion Zone. Borders are today's (Natural Earth, public domain); in 1986 Ukraine, Belarus and Russia were republics of the Soviet Union. Source 4 says the accident contaminated wide areas of all three. The map does not draw a 30-kilometer circle: Source 4 describes the closed area as everything within 30 km of the plant, but the zone's boundary as later managed is irregular rather than a circle, so the map marks only GEOnet's single point for the zone. The power plant itself is not marked; it stood just outside Prypiat, on the side toward Chornobyl, so at this scale it lies beside the Prypiat dot. The horizontal scale is adjusted for latitude, and the scale bar is for about 52° N.
04
Homework Assignment
~30 min
D2.Geo.12.9-12 Homework: Judging Consequences
Directions: Use Sources 1-4, Table 1 and Diagrams 1-2 from the lesson. Show your work for calculations, cite sources by number and paragraph, and answer in complete sentences.
Part 1: Evidence and Data (Problems 1-3)
Source 1, paragraph 1, gives usual and winter 1846-7 freight rates for corn from the Danube (11s. and 22s. per quarter) and for Indian corn from the United States (8s. and 16s. at the lower end). By what factor did each rise? Evaluate what the rise shows about the reach of the catastrophe.
In Source 2, paragraph 2, people in Ireland and in Canada complained about the emigrants in opposite ways. Explain both complaints and Trevelyan's own explanation, and evaluate how far his explanation can be trusted.
Using Table 1, compare the Irish-born population of the United States in 1850 and in 1930. Explain why a simple comparison of the two numbers could mislead, using the note on the 1930 figure.
Part 2: Evaluate (Problems 4-6)
Source 4, paragraph 2, says Soviet authorities presented their first accident report at an International Atomic Energy Agency meeting in Vienna in August 1986. Evaluate this as a political consequence of the catastrophe: what does it suggest about catastrophes and relations among countries?
Using Diagram 2 and Source 4, paragraph 4, explain why a catastrophe close to a border can have political consequences among countries, and evaluate how large those consequences might be compared with the Irish case.
Write an evaluative essay of 8-10 sentences: "Were the consequences of the catastrophe that began with a natural event (the potato blight and the famine that followed) or of the human-made catastrophe (Chernobyl) greater for global trade, politics and human migration?" Use at least three sources and one data set, and address a counterargument.
Rubric
Criterion
Full Credit (2 pts)
Partial Credit (1 pt)
No Credit (0 pts)
Data and Calculation
Factors and comparisons correct, with limits of the data explained
Calculations correct but limits ignored, or one error
Missing or incorrect
Source Evaluation
Each source's author and viewpoint weighed when using its claims
Viewpoint mentioned but not used
Sources treated as neutral
Three Areas, Two Kinds
Trade, politics and migration all addressed for both catastrophes
One area or one catastrophe missing
Two or more missing
Evaluation
A clear judgment using size, duration, reach and evidence, with a counterargument
A judgment with thin support
No judgment
05
Quiz: 20 Questions
Interactive, with answers
Instructions
Questions 3, 5, 6, 9, 15 and 16 use Source 1, and questions 7-9 and 15 use Source 3 (both in Guided Practice). Questions 10-12, 18 and 19 use Source 2, and questions 14, 17 and 20 use Source 4 (both in Independent Practice). Questions 4, 13 and 19 use Table 1 and Diagram 1. Choose the best answer, then check it.
Multiple choice: pick an option to check it. Short answer: write your answer, then reveal the model answer.
0 of 20 answered · 0 correct
Question 1 of 20 · Multiple Choice
Which of these is a natural catastrophe?
Answer: A
A plant disease is a force of nature, so it is a natural catastrophe, like the potato blight of 1845. A factory fire (B), a war (C) and a poorly built dam (D) all start with human action or error, so they are human-made.
Question 2 of 20 · Multiple Choice
Which of these is a human-made catastrophe?
Answer: C
A tank that bursts because of faulty equipment starts with human error, as the Chernobyl accident began with a failed reactor test. Earthquakes (A), droughts (B) and hurricanes (D) are natural, although human choices can make their effects worse.
Question 3 of 20 · Multiple Choice
According to Source 1, paragraph 1, what made it hard to get foreign food at moderate prices in the winter of 1846-7?
Answer: B
Trevelyan names "the sudden and extraordinary advance in freights, which occurred simultaneously in the ports of the United States of America, the Mediterranean, and the Black Sea." Choice A is the reverse of the source, which says large shipments were going to Europe; ice (C) is not mentioned; and choice D reverses paragraph 2, which describes duties being lowered.
Question 4 of 20 · Multiple Choice
Use Table 1. About what share of all foreign-born U.S. residents in 1870 had been born in Ireland?
Answer: D
1,855,827 ÷ 5,567,229 ≈ 0.333, about 33.3%. Choice A divides the wrong way (5,567,229 ÷ 1,855,827 ≈ 3.0). Choice B divides by the 1860 total (4,138,697) and choice C by the 1890 total (9,249,547) instead of the 1870 total.
Question 5 of 20 · Multiple Choice
According to Source 1, paragraph 2, what happened on the day the House of Lords passed Peel's bill on grain duties?
Answer: A
"The bill passed the House of Lords on the 29th June, 1846; and Sir R. Peel announced his resignation in the House of Commons on the same day," a political consequence of the trade change. Russell's suspension (B) came in 1847, the blight inquiry (C) in 1845, and no export ban (D) is mentioned.
Question 6 of 20 · Multiple Choice
According to Source 1, paragraph 3, what did Lord John Russell's bills of January 1847 do?
Answer: B
Russell's bills suspended "the duties on foreign corn, and the restrictions imposed by the Navigation Laws on the importation of corn in foreign vessels." Choice A reverses the change. Choice C contradicts Source 2, which says the government decided not to pay for passage, and choice D reverses the resolution permitting sugar in breweries.
Question 7 of 20 · Multiple Choice
In Source 3, paragraph 2, what does the Mansion House Committee blame for "aggravating starvation and famine"?
Answer: C
Resolution 5 accuses the government of "keeping the ports closed against the importation of foreign provisions" and so "unnaturally keeping up the price of provisions" under "the oppressive Corn Laws." Choice A is closer to Trevelyan's view in Source 1, paragraph 4; choices B and D are not in the source.
Question 8 of 20 · Multiple Choice
Which events does Source 3, paragraph 4, describe?
Answer: D
O'Rourke reports that at Youghal "two ships laden with corn for exportation were stopped by the people" and that convoys of meal and flour "were seized and carried off," conflict at home linked to the export trade. The other choices are not in this paragraph; walking to the ports (C) appears in Source 2.
Question 9 of 20 · Multiple Choice
Which statement best compares the viewpoints of Source 1 and Source 3?
Answer: A
Trevelyan writes that "the mischief lay beyond the knowledge and power of man," while the committee accuses "the culpable conduct of the present administration." Source 1 describes the Corn Law changes without blaming the laws (B), neither source says what C claims, and both authors were involved, not neutral (D): Trevelyan ran relief, and the committee was a Dublin protest body.
Question 10 of 20 · Multiple Choice
Source 2, paragraph 2, says 129,851 people emigrated from the United Kingdom in 1846 and 240,461 in the first three quarters of 1847. About how many times as many emigrated in those nine months of 1847 as in all of 1846?
Answer: B
240,461 ÷ 129,851 ≈ 1.85. Choice A is the difference in people (240,461 - 129,851), not "times as many." Choice C divides the wrong way. Choice D (2.47) estimates a full year of 1847 by dividing by 0.75 first, which answers a different question.
Question 11 of 20 · Multiple Choice
Source 2, paragraph 3, says 278,005 people arrived at Liverpool from Ireland between January 13 and November 1, 1847, and only 122,981 sailed on to foreign countries. How many did not sail on from Liverpool?
Answer: C
278,005 - 122,981 = 155,024 people did not sail on from Liverpool; they stayed in the city or elsewhere in Britain, at least for a time (the part of Trevelyan's text left out here goes on to describe relief work in Liverpool). Choice A adds the numbers, choice B is the number who sailed on, and choice D is the share who sailed on (122,981 ÷ 278,005 ≈ 44%), not a number of people.
Question 12 of 20 · Multiple Choice
According to Source 2, paragraph 1, why did the government decide not to pay for emigrants' passage in 1846?
Answer: D
Trevelyan says the coming emigration "without any assistance from the public, was likely to be quite as large as those countries could properly absorb," and that it should be "entirely voluntary." No closed ports (A), payments by landlords (B) or spent funds (C) appear in the source.
Question 13 of 20 · Multiple Choice
Use Table 1. By about what percent did the Irish-born population of the United States grow from 1850 to 1860?
Answer: A
(1,611,304 - 961,719) ÷ 961,719 = 649,585 ÷ 961,719 ≈ 0.675, about 67.5%. Choice B divides the increase by the 1860 number instead of the 1850 starting number. Choice C mistakes the number of people added for a percent, and choice D gives 1860 as a percent of 1850 (≈ 167.5%) rather than the increase.
Question 14 of 20 · Multiple Choice
According to Source 4, paragraph 3, about how many people did the Soviet and later Russian government evacuate in all, in 1986 and the years after?
Answer: B
About 115,000 were evacuated in 1986 and "another 220,000 people in subsequent years": 115,000 + 220,000 = 335,000. Choices A and C are the two parts alone, and choice D (220,000 - 115,000) subtracts them.
Question 15 of 20 · Short Answer
Was the Irish Famine a natural or a human-made catastrophe? Evaluate, using Source 1 and Source 3.
Model answer: It began as a natural catastrophe: Source 1, paragraph 4, says the blight "lay beyond the knowledge and power of man" and that every remedy failed. But Source 3 argues that human decisions turned crop failure into famine: the Mansion House resolutions blame the government for "keeping the ports closed" to foreign food and for letting Irish grain be exported "to feed others." Source 1 itself shows the government changed grain duties in 1846-1847, which suggests policy mattered. One defensible judgment is that the cause was natural but its consequences were shaped by human choices; another, closer to Trevelyan, is that the scale of the crop failure overwhelmed what any government could do. Either way, a strong answer notes that Trevelyan ran the relief and the committee was protesting, so each source has a stake, and that historians still debate the question. Rubric: score the reasoning, not the position. 2 points for a judgment that uses both sources and notes their viewpoints; 1 point for a judgment using one source.
Question 16 of 20 · Short Answer
Evaluate the consequences of the Irish catastrophe for global trade, using Source 1. Which consequence reached farthest, and which lasted longest?
Model answer: Source 1 shows three trade consequences: shipping freights rose "simultaneously" in U.S., Mediterranean and Black Sea ports; Peel's 1846 law cut duties on imported grain, with a uniform 1s. duty planned from 1849; and in 1847 Russell suspended the duties and the Navigation Laws' limits on foreign ships. The freight rise reached farthest, across three sea regions, but lasted only through the crisis. The duty changes lasted longer, since Peel's law set rules through 1849 and beyond, and they changed the terms of trade for all grain coming into Britain, not just for Ireland. Rubric: 2 points for naming consequences and judging reach and duration with evidence; 1 point for a list without a judgment.
Question 17 of 20 · Short Answer
Compare the political consequences in Source 1 with those in Source 4. Which catastrophe had the larger political consequences, according to these sources, and why?
Model answer: In Source 1, the crisis helped bring a major change in British trade law, and Trevelyan links the prime minister's resignation to the same day the bill passed, a large national consequence. (Parliamentary records show Peel's government fell after the Commons defeated his Irish coercion bill on 25 June 1846, the night the Lords passed the grain bill, so the resignation was tied to the Irish crisis and the split over repeal; see the teacher note on dates.) In Source 4, the Soviet authorities reported to an international meeting in Vienna, and the U.S. NRC studied the accident but concluded that its lessons "fell short of requiring immediate changes" in U.S. rules, a smaller consequence for U.S. politics. So, in these sources, the Irish case shows larger political consequences. A strong answer adds that these short excerpts may leave out major political effects of Chernobyl inside the Soviet Union, so the judgment is limited by the evidence. Rubric: 2 points for a supported comparison with a note on the limits of the sources; 1 point for a comparison only.
Question 18 of 20 · Short Answer
The government decided not to pay for passage and to keep emigration "entirely voluntary" (Source 2, paragraph 1). Using paragraph 2, evaluate one consequence of that decision for who was able to leave.
Model answer: Because emigrants had to pay their own way, those who left were mostly people with some resources. Trevelyan says the emigrants "generally belonged to that class of small holders, who, being somewhat above the level of the prevailing destitution, had sufficient resources left" to make the move. The poorest, who could not pay, were less able to escape, while Canada complained of "helpless and destitute" arrivals, so the evidence is mixed. A strong answer judges that the policy shaped the migration by income and notes that Trevelyan, who helped make the policy, explains it in his own favor. Rubric: 2 points for a consequence supported by the source and a note on its viewpoint; 1 point for a consequence only.
Question 19 of 20 · Short Answer
Source 2, paragraph 2, says Irish emigrants in America sent "large remittances" in 1846-1847 "to enable their relations in Ireland to follow them." Using Table 1 or Diagram 1, evaluate how remittances could make a catastrophe's effect on migration last longer than the catastrophe itself.
Model answer: Remittances let earlier emigrants pay for relatives to join them, so each wave of migration could pay for the next. That helps explain why the Irish-born population of the United States kept rising after the worst famine years, from about 0.96 million in 1850 to about 1.61 million in 1860 and about 1.86 million in 1870, and stayed near that level through 1890, still about 1.62 million in 1900 (Diagram 1). The catastrophe started the movement, but family links kept it going for decades, although other causes, such as jobs in America, also mattered. Rubric: 2 points for linking remittances to continued migration with census numbers; 1 point for one of the two.
Question 20 of 20 · Short Answer
Source 4 does not describe any consequences of Chernobyl for trade. Suggest two possible trade consequences, and for each, name the kind of evidence that would show whether it really happened.
Model answer: First, other countries might have limited imports of food from contaminated areas; evidence would be government import rules or trade statistics for food from the region before and after 1986. Second, farming and forestry inside the closed zone stopped, so the region's own production and sales would fall; evidence would be farm output or export records for the affected districts. Any answer must be tested with sources, since these are hypotheses, not findings from Source 4. Rubric: 2 points for two plausible consequences, each with a fitting kind of evidence; 1 point for one.
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06
Frequently Asked Questions
10 Questions
What does D2.Geo.12.9-12 mean?
D2.Geo.12.9-12 asks high school students to judge the effects of disasters, both natural ones and those caused by people, on trade, politics and the movement of people. The full text is "Evaluate the consequences of human-made and natural catastrophes on global trade, politics, and human migration." The key verb is evaluate: students weigh how large, lasting and far-reaching each consequence was.
How is D2.Geo.12.9-12 different from D2.Geo.12.6-8?
The grades 6-8 indicator with the same number is about how changes in where people live change land use in particular places. The grades 9-12 indicator turns to sudden events: catastrophes and their consequences for trade, politics and migration. Both deal with people and places changing, but the 9-12 indicator asks for evaluation of causes that strike suddenly.
What is the difference between a natural and a human-made catastrophe?
A natural catastrophe starts with a force of nature, such as an earthquake, a hurricane, a drought or a plant disease. A human-made catastrophe starts with human action or error, such as an industrial accident, a war or a dam failure. Many real cases mix the two, because human decisions can make a natural disaster's effects better or worse.
Why pair the Irish Famine with Chernobyl?
One began with a natural event and the other with a human error, so together they cover both kinds of catastrophe the indicator names. They also differ in period, place and evidence: 1840s writings and census tables on one side, a modern government fact sheet and a map on the other. Comparing them shows students how to evaluate consequences with very different sources.
Does the lesson say the British government caused the famine?
No. It presents the view of Charles Trevelyan, the Treasury official who ran relief, and the protests of a Dublin committee quoted by an Irish historian, and asks students to evaluate them. Writers have disagreed about the role of government policy since the 1840s, and the page treats that as an open question of interpretation, with each view attributed to its source.
What mistakes do students often make with this standard?
A frequent mistake is listing consequences without judging them, which is describing rather than evaluating. Students also treat one participant's account as neutral, mix up migration with the money migrants send home, or claim consequences the sources do not show. Asking students to score each consequence for size, duration, reach and evidence keeps the evaluation honest.
How can I assess D2.Geo.12.9-12?
Give students a short source set on a catastrophe they have not studied and ask for an evaluative essay that covers trade, politics and migration. Look for a clear judgment, quantitative evidence, attention to the authors' viewpoints and a counterargument. The homework on this page ends with that kind of essay.
Where do the numbers on this page come from?
The figures on Irish-born Americans come from the U.S. Census Bureau's historical tables of the foreign-born population, the emigration and freight figures from Trevelyan's 1848 book, and the Chernobyl figures from a U.S. Nuclear Regulatory Commission fact sheet. The map points come from the National Geospatial-Intelligence Agency. The Olvidra numbers in Activity 3 are invented.
How does this standard connect to history and economics?
It overlaps with the C3 history indicators on multiple causes and effects (D2.His.14.9-12) and with economics topics on trade policy. Geography adds the spatial side: where a catastrophe struck, how far its effects spread, and which way people and goods moved. Reading sources with different viewpoints also practices RH.11-12.6.
Is this topic appropriate for all students?
Yes, with care. Both cases involve great suffering, and some students may have family connections to them. The teacher note suggests respectful language, attributing interpretations to their sources, and keeping the focus on evidence and consequences rather than on blame or on current conflicts.
07
Related Standards
5 standards
These standards connect to D2.Geo.12.9-12: prerequisites to review first, parallel standards at the same level, and next steps that build on it.
Before this lesson
D2.Geo.12.6-8Prerequisite
Explain how global changes in population distribution affect local land use
Gather information from sources with a wide range of views, judging their reliability
Lesson coming soon
Standard text: National Council for the Social Studies (NCSS), The College, Career, and Civic Life (C3) Framework for Social Studies State Standards: Guidance for Enhancing the Rigor of K-12 Civics, Economics, Geography, and History (Silver Spring, MD: NCSS, 2013). NCSS was not involved in the production of this lesson and does not endorse it.