AP Euro Interwar Period and World War II ID Terms

Treaty of Versailles

The 1919 peace agreement ending WWI imposing territorial losses, military restrictions, and reparations on Germany.

League of Nations

An international peacekeeping organization proposed by Woodrow Wilson and established in 1920 as part of the Versailles settlement, intended to resolve conflicts through diplomacy.

Woodrow Wilson

led America into WWI and championed the Fourteen Points—a liberal peace program centered on national self-determination, open diplomacy, and the League of Nations.

War Guilt Clause

Article 231 of the Treaty of Versailles, which assigned full responsibility for WWI to Germany and its allies, providing the legal justification for reparations.

Reparations

Financial penalties imposed on Germany by the Allies at Versailles—originally set at 132 billion gold marks (roughly $33 billion)—to compensate for war damages.

Weimar Republic

The democratic government established in Germany from 1919 to 1933, named after the city where its constitution was drafted, replacing the imperial monarchy after WWI.

Spartacist Uprising

A January 1919 communist revolution attempt in Berlin led by Rosa Luxemburg and Karl Liebknecht of the Spartacist League (later KPD), crushed by government-backed Freikorps paramilitary units.

Hyperinflation in Germany

An extreme monetary crisis peaking in 1923 when Germany printed money to pay reparations and war debts, causing prices to rise so fast that currency became nearly worthless.

Great Depression

A global economic catastrophe beginning with the 1929 U.S. stock market crash that caused mass unemployment, bank failures, and industrial collapse across the world through the 1930s.

New Economic Policy

Lenin's 1921 mixed-economy compromise in the Soviet Union that temporarily allowed limited private trade and small business after the devastation of the Russian Civil War.

Five-Year Plans

Stalin's series of ambitious centralized economic programs beginning in 1928 that set rapid industrialization and production targets across the Soviet Union, enforced through state control of all resources.

Collectivization

Stalin's forced consolidation of individual peasant farms into large, state-controlled collective farms (kolkhozy) beginning in 1929, eliminating private agricultural ownership.

Holodomor

The Soviet-engineered famine of 1932–33 in Ukraine, caused by forced grain requisitions during collectivization that stripped peasants of food.

Stalin's Purges

A series of political campaigns from 1934–1938 (peaking in the "Great Terror") in which Stalin eliminated perceived enemies within the Communist Party, military, and Soviet society through executions, show trials, and gulags.

Adolf Hitler

Austrian-born German politician and leader (Führer) of the Nazi Party who became Chancellor of Germany in 1933 and established a totalitarian dictatorship, initiating WWII and the Holocaust.

Benito Mussolini

Italian fascist dictator who founded the National Fascist Party, seized power in 1922, ruled Italy as "Il Duce" (the leader), and allied with Hitler in the Rome-Berlin Axis.

Joseph Stalin

General Secretary of the Soviet Communist Party who consolidated absolute power by the late 1920s and ruled the USSR until his death in 1953, overseeing rapid industrialization, mass terror, and WWII victory.

Fascism

A far-right authoritarian political ideology emphasizing ultranationalism, dictatorial leadership, forcible suppression of opposition, and the subordination of individual interests to the state and nation.

Nazism

The specific form of fascism developed by Hitler's NSDAP (National Socialist German Workers' Party), combining ultranationalism with virulent antisemitism, racial hierarchy, and the concept of Aryan supremacy.

Totalitarianism

A system of government in which the state holds total control over all aspects of public and private life—including the economy, media, military, and even culture and thought.

Mein Kampf

Hitler's autobiographical manifesto ("My Struggle"), written during his 1924 imprisonment, outlining his antisemitic racial ideology, belief in German expansion, and hatred of Marxism and democracy.

March on Rome

Mussolini's October 1922 political ultimatum in which thousands of Fascist Blackshirts marched toward Rome, leading King Victor Emmanuel III to invite Mussolini to form a government rather than risk civil war.

Beer Hall Putsch

Hitler's failed November 1923 coup attempt in Munich, in which Nazi forces tried to seize the Bavarian government. It was quickly crushed; Hitler was arrested and sentenced to prison.

Enabling Act

The March 1933 law passed by the Reichstag (with Nazi intimidation) that gave Hitler's cabinet the power to enact laws without parliamentary approval for four years, effectively ending German democracy.

Gestapo

The Geheime Staatspolizei, or Nazi secret state police, established in 1933 under Göring and later Himmler, tasked with identifying and eliminating political opponents and enemies of the regime.

SS (Schutzstaffel)

Originally Hitler's personal bodyguard unit, the SS evolved into a massive, racially elite paramilitary organization under Heinrich Himmler, overseeing the concentration camps, Einsatzgruppen, and police functions.

Remilitarization of the Rhineland

Hitler's March 1936 order to send German troops into the demilitarized Rhineland zone, in direct violation of the Treaties of Versailles and Locarno.

Anschluss

The annexation of Austria into Nazi Germany in March 1938, achieved through political pressure and the arrival of German troops, uniting the two German-speaking nations.

Munich Agreement

The September 1938 agreement between Germany, Britain, France, and Italy allowing Hitler to annex the Sudetenland (German-speaking Czechoslovakia) in exchange for a promise of no further territorial demands.

Neville Chamberlain

British Prime Minister from 1937–1940 who pursued a policy of appeasement toward Hitler, most famously returning from Munich in 1938 claiming to have secured "peace for our time."

Appeasement

The British and French diplomatic strategy of making concessions to Hitler in the 1930s—over the Rhineland, Austria, and Czechoslovakia—to avoid war and address what seemed like legitimate German grievances.

Nazi-Soviet Pact

The August 1939 non-aggression agreement between Hitler and Stalin, secretly dividing Eastern Europe into German and Soviet spheres of influence and freeing Germany from a two-front war risk.

Spanish Civil War

The 1936–1939 conflict in Spain between the Republican government and Nationalist rebels led by Franco, in which Nazi Germany and Fascist Italy supported Franco while the USSR backed the Republic.

Francisco Franco

Spanish general who led the Nationalist forces to victory in the Spanish Civil War and ruled Spain as dictator from 1939 until his death in 1975.

Invasion of Poland

Germany's September 1, 1939 attack on Poland using rapid, combined-arms assault, triggering British and French declarations of war and officially beginning WWII in Europe.

Blitzkrieg

German for "lightning war"—a military strategy combining fast-moving tanks, motorized infantry, and close air support to overwhelm and encircle enemy forces before they could respond.

Battle of Britain

The summer-fall 1940 air campaign in which the German Luftwaffe attempted to destroy the Royal Air Force to enable a naval invasion of Britain, ultimately failing after months of aerial combat.

Operation Barbarossa

Germany's June 22, 1941 invasion of the Soviet Union—the largest military operation in history—involving 3 million German and Axis troops attacking along a 2,900-km front.

Battle of Stalingrad

The brutal urban battle from August 1942 to February 1943, in which Soviet forces encircled and destroyed Germany's 6th Army in the ruins of Stalingrad on the Volga River.

D-Day

June 6, 1944—the Allied amphibious invasion of Nazi-occupied Normandy, France, involving over 156,000 troops landing on five beaches in the largest seaborne invasion in history.

Winston Churchill

British Prime Minister from 1940–1945 (and again 1951–1955) who led Britain through its darkest hours during WWII, refusing all compromise with Hitler and inspiring national resistance through powerful oratory.

Franklin D. Roosevelt

32nd U.S. President who guided America through the Great Depression and most of WWII, forging the Grand Alliance with Britain and the Soviet Union before dying in April 1945.

Holocaust

The systematic, state-sponsored genocide perpetrated by Nazi Germany and its collaborators from 1941–1945, targeting Jews and other groups, resulting in the murder of approximately 6 million Jews and 5–6 million others.

Nuremberg Laws

The 1935 antisemitic racial laws in Nazi Germany that stripped Jews of citizenship, prohibited marriage between Jews and non-Jews, and codified racial hierarchy into law.

Kristallnacht

The "Night of Broken Glass" (November 9–10, 1938)—a coordinated pogrom across Germany and Austria in which Nazi paramilitaries destroyed Jewish businesses, homes, and synagogues, killing dozens and arresting 30,000 Jews.

Final Solution

The Nazi regime's code name (Endlösung) for its policy of systematic genocide of all Jews in Europe, formally coordinated at the Wannsee Conference in January 1942.

Yalta Conference

The February 1945 meeting of Roosevelt, Churchill, and Stalin in Crimea to plan the postwar reorganization of Europe, including the division of Germany and the shape of the United Nations.

Nuremberg Trials

The 1945–1946 international military tribunals in which Allied powers prosecuted Nazi leaders for war crimes, crimes against peace, and crimes against humanity.