World War mnemonics that make causes and leaders stick

MAIN (M=Militarism, A=Alliances, I=Imperialism, N=Nationalism) — Causes of World War I

MMilitarism — European powers built massive armies and navies

AAlliance systems — Triple Entente vs Triple Alliance

IImperialism — competition for colonies created tensions

NNationalism — ethnic groups sought self-determination

WWI: 1914–1918. WWII: 1939–1945.

World War Dates — WWI: July 28, 1914 – November 11, 1918 (Armistice Day, 11am on the 11th day of the 11th month). WWII: September 1, 1939 – September 2, 1945 (V-J Day).

WWII Allies: USA, UK (United Kingdom), USSR (Union of Soviet Socialist Republics), France

WWII Allied Powers — United States (joined 1941), United Kingdom, Soviet Union (joined after Operation Barbarossa, 1941), and Free France. Despite being allies, the US/UK and USSR had fundamental ideological differences.

D-Day = June 6, 1944

Normandy Invasion — Operation Overlord. June 6, 1944. Allied forces (US, UK, Canada) stormed 5 beaches in Normandy, France. Beaches: Utah, Omaha, Gold, Juno, Sword. Turned the tide on the Western Front.

Treaty of Versailles → German resentment → WWII

WWI to WWII Connection — The harsh Treaty of Versailles (1919) humiliated Germany: war guilt clause, reparations, territorial losses. Economic collapse + resentment enabled Hitler's rise. WWII was in many ways WWI continued.

WWI timeline: Archduke Franz Ferdinand assassinated June 28, 1914 → war declared → US joins 1917 → Armistice November 11, 1918

June 28, 1914Franz Ferdinand assassinated — war triggered

April 1917USA enters WWI

Nov 11, 1918Armistice — war ends

WWI trench warfare: Western Front stalemate. New weapons: machine guns, poison gas, tanks, planes.

WWI Trench Warfare — Machine guns made frontal assaults suicidal. Both sides dug trenches from Belgium to Switzerland. Millions died for yards of territory. New weapons: poison gas (first used by Germany 1915), tanks (Britain 1916), airplanes as scouts then fighters. Casualties: ~20 million dead.

Hitler's rise: Great Depression → Nazi Party → Chancellor 1933 → Führer 1934 → Nuremberg Laws 1935

Hitler's Rise to Power — Great Depression devastated Germany, already humiliated by Versailles. Hitler promised economic recovery and national restoration. Nazi Party won elections. Reichstag fire (1933) gave Hitler emergency powers. Enabling Act made him dictator. Nuremberg Laws (1935) stripped Jews of citizenship.

WWII Pacific: Pearl Harbor (Dec 7, 1941) → Midway (1942, turning point) → Island hopping → Hiroshima/Nagasaki (Aug 1945)

Dec 7, 1941Pearl Harbor — US enters war

June 1942Midway — turning point

Aug 1945Atomic bombs → surrender

Holocaust: 6 million Jews + 5 million others systematically murdered by Nazi Germany

The Holocaust — Nazi regime murdered 6 million Jews (~2/3 of European Jewish population) plus 5 million others (Roma, disabled, Soviet POWs, political prisoners, homosexuals). Concentration camps, death camps (Auschwitz, Treblinka). Nuremberg Trials (1945-46) established war crimes accountability.

Cold War origins: WWII ended → USSR occupied Eastern Europe → Iron Curtain → Truman Doctrine (1947)

Origins of the Cold War — USSR lost 27 million in WWII, wanted buffer states → occupied Eastern Europe. Churchill's 'Iron Curtain' speech (1946): Europe divided. Truman Doctrine (1947): US would support free peoples resisting communism. Marshall Plan: US rebuilt Western Europe to prevent communist takeover.

Causes of WWII: PARTT (P=Propaganda, A=Appeasement, R=Rise of fascism, T=Treaty of Versailles, T=Totalitarianism)ty of Versailles, Treaty failures of League of Nations

PPropaganda and fascist ideology

AAppeasement policy by Britain and France

RRise of Hitler and fascism

TTreaty of Versailles — German resentment

TTreaty failures of the League of Nations