LEAP US History Module 4 The Great Depression and World War II: a complete overview of the economic collapse, the New Deal, the road to war, and the Allied victory

What Module 4 actually demands

Module 4 covers the Great Depression and World War II (roughly 1929 to 1945), the core of Standard 4 (Becoming a World Power through World War II) and, at about a quarter of the test, one of its most heavily weighted parts. It tells how the prosperity of the 1920s collapsed into the worst economic crisis in American history, how the New Deal answered it and remade government, and how the United States moved from isolationism to lead the Allied victory in the largest war ever fought. The LEAP work is source based: read an unemployment graph, a New Deal poster, a battle map, or a passage on the Holocaust or the bomb, and use it as evidence.

This guide ties together the matching dot-point pages, each with its own practice questions: the causes of the Great Depression, the New Deal, the road to World War II, the United States in World War II, the World War II home front, and the Holocaust and the atomic bomb.

The causes of the Great Depression

The stock market crash of 1929 triggered the Great Depression, but the deeper causes had built through the 1920s: overproduction and underconsumption, excessive credit and speculation, unequal wealth, and a weak banking system. Bank failures wiped out savings and froze lending, unemployment hit about 25 percent, and the Dust Bowl ruined farms. President Hoover's belief in limited government left his response too small.

The New Deal

Franklin Roosevelt's New Deal answered the crisis with relief, recovery, and reform: jobs programs (CCC, WPA), the TVA, bank reform and the FDIC, and the lasting Social Security Act (1935). It greatly expanded the federal government's role, faced opposition from the Supreme Court and critics such as Louisiana's Huey Long, and did not fully end the Depression, but it permanently changed government's responsibilities.

The road to World War II

Aggressive totalitarian dictatorships (Hitler's Germany, Mussolini's Italy, militarist Japan) and the failure of appeasement led to war in 1939. The United States stayed neutral under the Neutrality Acts, then shifted toward the Allies through Lend-Lease (1941). The Japanese attack on Pearl Harbor on December 7, 1941, ended isolationism and brought the United States into the war.

The American role and the Allied victory

The Allies fought the Axis on a Europe-first strategy. In Europe, Stalingrad and D-Day (1944) turned the tide, and Germany surrendered in May 1945. In the Pacific, Midway (1942) and island-hopping drove the United States toward Japan, and the war ended in August 1945 after the atomic bombings. American industrial power was decisive.

The home front

Total mobilization ended the Depression with full employment, women entered the workforce ("Rosie the Riveter"), and African Americans gained jobs and launched the Double V campaign while still facing discrimination. Civilians bought war bonds and accepted rationing. But the government also interned about 120,000 Japanese Americans, most of them citizens, a grave violation of civil liberties.

The Holocaust and the atomic bomb

The Holocaust was the Nazi genocide of six million Jews and millions of others, exposed when the Allies liberated the camps and punished at Nuremberg. The Manhattan Project built the atomic bomb, and President Truman ordered it dropped on Hiroshima and Nagasaki to end the war and avoid an invasion, a decision still debated for its civilian toll.

Check your knowledge

A mix of recall and application questions covering Module 4. Attempt them under timed conditions, then check against the solutions.

1. State the trigger and two deeper causes of the Great Depression. (3 marks)
2. Explain why bank failures deepened the Depression. (2 marks)
3. Describe the Dust Bowl and one of its effects. (2 marks)
4. Explain the three Rs of the New Deal with an example of each. (3 marks)
5. State what the Social Security Act of 1935 created. (2 marks)
6. Explain how the New Deal changed the role of the federal government. (2 marks)
7. Define appeasement and give the classic example. (2 marks)
8. Explain the difference between the Neutrality Acts and Lend-Lease. (2 marks)
9. Explain how Pearl Harbor changed American public opinion. (2 marks)
10. Identify one turning point in Europe and one in the Pacific. (2 marks)
11. Describe the internment of Japanese Americans and why it is condemned. (2 marks)
12. State one argument for and one against the dropping of the atomic bombs. (2 marks)