World War 2

Isolationism

A foreign policy focused on domestic issues, avoiding involvement in international conflicts, notably post-WWI.

Five-Power Naval Treaty

A 1921 agreement setting naval limits among the U.S., Great Britain, Japan, France, and Italy.

Ten-Year Moratorium on Shipbuilding

A pact prohibiting the creation of new ships or replacement of old ones for ten years to promote disarmament.

Nine-Power Pact

A 1922 agreement respecting the Open Door Policy in China, involving multiple nations including Portugal and Belgium.

Neutrality Acts of 1935

Legislation aimed to prevent U.S. involvement in foreign wars by prohibiting arms sales to belligerent nations.

Weimar Republic

Germany's government post-WWI, struggling with economic recovery and political instability.

Rise of the Nazi Party

Emergence of a political movement rejecting the Treaty of Versailles and promoting German nationalism and anti-Semitism.

Munich Conference (1938)

A meeting where Germany sought territorial concessions from France, Britain, and Italy, concerning Czechoslovakia.

Stalin-Hitler Pact (1939)

A non-aggression treaty between Germany and the Soviet Union before WWII, facilitating Germany's invasion of Poland.

America First Movement

A 1940 organization opposing U.S. intervention in WWII, founded by Kingman Brewster.

Operation Barbarossa

Germany's invasion of the Soviet Union during WWII, marked by brutal tactics.

Attack on Pearl Harbor

The surprise military strike by Japan on the U.S. naval base in Hawaii, leading to U.S. entry into WWII.

Atomic Bombing of Hiroshima and Nagasaki

U.S. bombings in 1945 that caused massive civilian casualties, aimed at prompting Japan's surrender.

Unit 731

A Japanese military unit that conducted lethal biological warfare and other heinous acts during WWII.