20th Century

Britain and France Declare War on Nazi Germany

Two days after Germany's invasion of Poland on September 1, 1939, British Prime Minister Neville Chamberlain addressed Parliament, issuing an ultimatum that expired at 11 a.m. on September 3. France followed hours later with its own declaration. These actions activated alliance commitments to Poland and transformed a regional conflict into a global war. The declarations also initiated a naval blockade of Germany, marking the start of the Battle of the Atlantic. Australia, New Zealand, and other dominions soon joined the Allied cause.

Germany and USSR Agree to Partition Poland

Following the German invasion of Poland on September 1 and the Soviet entry on September 17, the two powers moved to formalize control over the conquered territory. On September 29, 1939, German and Soviet representatives signed a supplementary protocol to the earlier Molotov-Ribbentrop Pact, delineating spheres of influence roughly along the Bug River. The agreement assigned western Poland to Germany and eastern regions, including parts of modern Belarus and Ukraine, to the Soviet Union. This division extinguished the Polish state for the duration of the war and facilitated coordinated repression in their respective zones. The pact also included secret provisions on population transfers and economic cooperation.

Soviet Union Invades Finland, Starting Winter War

Following the Molotov-Ribbentrop Pact and the partition of Poland, the Soviet Union sought to secure its northwestern frontier by demanding Finnish territory near Leningrad and naval bases. Finland refused concessions that would compromise its sovereignty. On November 30, 1939, the Red Army crossed the border in multiple sectors, bombed Helsinki, and launched a full-scale invasion with superior numbers and equipment. Finnish forces, though outnumbered, mounted a determined defense using guerrilla tactics, ski troops, and harsh winter conditions to inflict disproportionate casualties. The conflict, known as the Winter War, lasted until March 1940 and drew international attention to Finnish resilience. It exposed weaknesses in Soviet military preparedness ahead of World War II escalation.

Culture 20th Century North America

Gone with the Wind Premieres in Atlanta

During the Great Depression, Hollywood produced lavish historical epics to provide escapism, and producer David O. Selznick adapted Margaret Mitchell's bestselling 1936 novel about the American Civil War and Reconstruction South. The film featured an unprecedented nationwide search for the lead actress Scarlett O'Hara, ultimately cast as Vivien Leigh. Its world premiere occurred on December 15, 1939, at Loew's Grand Theatre in Atlanta, Georgia, drawing massive crowds including Confederate veterans. The three-and-a-half-hour Technicolor production became an immediate cultural phenomenon, earning eight Academy Awards including Best Picture and setting box-office records that stood for decades.

Politics Born On 20th Century North America

Nancy Pelosi Born in Baltimore

Nancy Patricia D'Alesandro Pelosi was born on March 26, 1940, in Baltimore, Maryland, into a politically active family. Her father, Thomas D'Alesandro Jr., served in Congress and as mayor of Baltimore. Pelosi graduated from Trinity College in Washington, D.C., and became active in Democratic Party organization after moving to California. She won a special election to the U.S. House of Representatives in 1987 and has represented San Francisco-area districts ever since. Pelosi became House Democratic whip, minority leader, and in 2007 the first woman elected Speaker of the House. She served as Speaker from 2007 to 2011 and again from 2019 to 2023. Her leadership encompassed major legislation involving health care, financial regulation, economic stimulus, infrastructure, climate policy, and federal...

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Winston Churchill Becomes British Prime Minister

As German forces launched their invasion of Western Europe in May 1940, British Prime Minister Neville Chamberlain faced a loss of confidence in Parliament. On May 10, King George VI appointed Winston Churchill, then First Lord of the Admiralty, to form a new national coalition government. Churchill had long warned about the Nazi threat and advocated a more aggressive stance against Germany. His appointment came on the same day German troops crossed into the Netherlands, Belgium, and Luxembourg. Churchill immediately addressed the nation, promising only “blood, toil, tears and sweat” in the fight ahead.

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Churchill Delivers Blood, Toil, Tears and Sweat Speech

As Nazi Germany invaded Western Europe in World War II, Neville Chamberlain resigned and Winston Churchill formed a coalition government. On May 13, 1940, Churchill addressed the House of Commons for the first time as prime minister. He requested a vote of confidence while declaring the government's resolve to fight Germany. The speech famously offered the nation "nothing... but blood, toil, tears and sweat." Parliament approved the new government unanimously amid the unfolding Battle of France.

Dunkirk Evacuation Operation Dynamo Begins

German armored columns had driven Allied forces into a pocket around the French port of Dunkirk on the English Channel. On May 26, 1940, the British Admiralty launched Operation Dynamo to evacuate trapped British, French, and other Allied troops. Initial naval efforts were supplemented by hundreds of civilian vessels that crossed the Channel under Luftwaffe attack. Over the following days the improvised armada ferried more than 338,000 soldiers to safety in Britain despite the loss of equipment and ships.

German Forces Enter and Occupy Paris

Following the rapid German advance through the Low Countries and northern France in the Battle of France, French defenses collapsed. On June 14, 1940, German troops entered Paris, which had been declared an open city to spare it destruction. Parisians awoke to loudspeakers announcing a curfew as Wehrmacht units marched in and raised swastikas over landmarks including the Eiffel Tower. The occupation marked the effective end of the Battle of France and led directly to the armistice signed days later.

France Signs Armistice with Nazi Germany

After the rapid German Blitzkrieg overran much of France in May and June 1940, the French government under Marshal Philippe Pétain sought terms to avoid total destruction. Negotiations occurred in the same railway car at Compiègne where Germany had surrendered in 1918. On June 22 the armistice was signed, dividing France into an occupied northern zone and an unoccupied southern zone governed from Vichy. Pétain's regime retained nominal sovereignty but collaborated with Germany. Fighting ceased at midnight on June 25.

Battle of Britain Air Campaign Begins

Following the fall of France in June 1940, Nazi Germany prepared for a potential invasion of Britain known as Operation Sea Lion, which required control of the skies over the English Channel. On July 10, 1940, the Luftwaffe launched its first major attacks, targeting British shipping convoys in the Channel and ports in southern England and Wales. Royal Air Force fighters responded, beginning a sustained air battle that lasted into October. The campaign involved thousands of aircraft on both sides, with Britain relying on radar, integrated defense systems, and skilled pilots including many from Commonwealth nations. German losses mounted while British production and resolve held firm.

Largest Air Battle of Battle of Britain Fought

In the summer of 1940, Nazi Germany launched an air campaign to gain superiority over the Royal Air Force ahead of a planned invasion of Britain. The Luftwaffe intensified attacks on August 18, targeting RAF airfields, radar stations, and aircraft factories in what became known as the Hardest Day. Over 1,000 German aircraft crossed the English Channel in multiple waves, met by determined British fighters. Intense dogfights raged across southern England, with both sides suffering heavy losses—approximately 69 German and 68 British aircraft destroyed. The RAF successfully defended its bases and maintained operational capacity despite the scale of the assault.

German Luftwaffe Launches the Blitz on London

Following the Battle of Britain, Nazi Germany shifted strategy to terror bombing of British cities to force surrender. On September 7, 1940, approximately 300 German bombers, escorted by fighters, conducted a massive daylight raid on London docks and East End neighborhoods. The attack killed hundreds of civilians and marked the start of 57 consecutive nights of bombing known as the Blitz. British defenses, including radar and night fighters, responded but could not prevent widespread destruction in the initial phase. The campaign aimed to break civilian morale and disrupt industry but ultimately hardened British resolve under Prime Minister Winston Churchill.

Culture 20th Century Europe

Lascaux Cave Paintings Discovered in France

During the early years of World War II in occupied France, four teenagers exploring the countryside near Montignac stumbled upon a hidden entrance. On September 12, 1940, while investigating a hole created by an uprooted tree, they descended into a network of caves adorned with vivid prehistoric paintings estimated at 15,000 to 17,000 years old. The artwork featured detailed depictions of animals such as bulls, horses, and deer, executed with remarkable sophistication using natural pigments. Local authorities and archaeologists quickly confirmed the significance of the Upper Paleolithic site, often called the 'Sistine Chapel of prehistoric art.' The discovery provided unprecedented insight into early human artistic expression and symbolic thinking.

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Military 20th Century Middle East & North Africa

Italy Launches Invasion of Egypt in WWII

Following Italy's entry into World War II, Benito Mussolini ordered Marshal Rodolfo Graziani to advance from Libya into British-controlled Egypt to threaten the Suez Canal. On September 13, Italian forces crossed the border in Operation E, initially capturing Sollum and advancing toward Sidi Barrani despite logistical challenges. British Commonwealth troops conducted delaying actions but withdrew to prepared positions at Mersa Matruh. The limited Italian advance exposed supply weaknesses in the desert theater. It marked the opening of the Western Desert Campaign.

Politics 20th Century North America

FDR Elected to Unprecedented Third Term

As World War II raged in Europe, Americans weighed isolationism against the need for strong leadership amid economic recovery from the Great Depression. Incumbent President Franklin D. Roosevelt, architect of the New Deal, broke with the two-term tradition established by George Washington. On November 5, 1940, Roosevelt defeated Republican Wendell Willkie, securing 449 electoral votes to 82 in one of the largest margins in modern history. This victory made him the first and only U.S. president elected to a third term. The outcome reflected voter confidence in his crisis management but also sparked debates over executive power limits.

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Culture Born On 20th Century North America

Richard Pryor Born in Peoria, Illinois

Richard Franklin Lennox Thomas Pryor, known professionally as Richard Pryor, was born on December 1, 1940, in Peoria, Illinois. After beginning with a comparatively restrained nightclub act, he transformed his comedy into intensely personal storytelling shaped by race, poverty, relationships, addiction, violence, and American hypocrisy. Pryor animated conversations through distinct voices, physical movement, vulnerability, and close observation, making people and even animals vivid onstage. His influential albums, concert films, screenwriting, and acting carried this voice far beyond comedy clubs.

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Politics 20th Century North America

FDR Delivers Four Freedoms Speech

As World War II raged in Europe and Asia in late 1940, the United States remained officially neutral yet increasingly aligned with Britain against Axis powers. On January 6, 1941, President Franklin D. Roosevelt addressed a joint session of Congress in his annual State of the Union message. In the speech's closing section, he articulated four essential freedoms—freedom of speech, freedom of worship, freedom from want, and freedom from fear—that should be enjoyed everywhere in the world. Roosevelt used the address to build public support for aiding the Allies and preparing for potential U.S. involvement. The speech was later illustrated by Norman Rockwell in famous posters.

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Military 20th Century North America

Roosevelt Signs Lend-Lease Act

By early 1941, Britain and other nations fighting Nazi Germany faced severe shortages of war materials while the United States remained officially neutral. President Franklin D. Roosevelt sought authority to provide aid without direct cash payments. After intense congressional debate, the House and Senate approved the measure. On March 11, 1941, Roosevelt signed the Lend-Lease Act into law, authorizing the president to sell, transfer, lend, or lease defense articles to any country whose defense he deemed vital to U.S. security. The program ultimately delivered over $50 billion in supplies, primarily to Britain and the Soviet Union.

Culture 20th Century North America

National Gallery of Art Opens in Washington

After years of planning funded by industrialist Andrew Mellon’s donation of his art collection and construction funds, the National Gallery of Art was dedicated on the National Mall. President Franklin D. Roosevelt accepted the gift on behalf of the American people during ceremonies attended by thousands. The West Building, designed by John Russell Pope, opened to the public three months later with an extensive collection of European and American masterpieces. Mellon’s bequest included not only artworks but also an endowment ensuring ongoing operations. The museum quickly became a centerpiece of the nation’s cultural institutions.

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British Navy Sinks German Battleship Bismarck

In the Battle of the Atlantic during World War II, the German battleship Bismarck had recently sunk the British battlecruiser Hood, prompting an intense Royal Navy pursuit across the North Atlantic. On May 27, 1941, after the Bismarck was crippled by torpedo attacks from aircraft and ships, British battleships King George V and Rodney, along with cruisers, closed in near the French coast. Coordinated shelling and torpedoes overwhelmed the German vessel despite its formidable armament. The Bismarck sank with the loss of over 2,000 crew members; only 114 survived. The action secured a major propaganda and strategic victory for Britain.

Politics 20th Century Global

Roosevelt and Churchill Draft Atlantic Charter

As World War II raged in Europe and the Pacific, U.S. President Franklin D. Roosevelt and British Prime Minister Winston Churchill held secret meetings aboard naval vessels in Placentia Bay, Newfoundland, from August 9 to 12. They discussed strategies including aid to the Soviet Union, warnings to Japan, and principles for the postwar world. On August 12, the leaders finalized the text of a joint declaration outlining eight points on self-determination, free trade, disarmament, and international cooperation. The document, later known as the Atlantic Charter, was publicly released on August 14.

Politics 20th Century Global

Roosevelt and Churchill Issue Atlantic Charter

As Nazi Germany dominated much of Europe and the United States remained officially neutral in World War II, President Franklin D. Roosevelt and Prime Minister Winston Churchill met secretly aboard warships off Newfoundland. Their discussions focused on shared democratic principles and postwar goals amid ongoing global conflict. On August 14, 1941, they released a joint declaration outlining eight points, including self-determination for peoples, free trade, disarmament, and freedom from fear and want. The document became known as the Atlantic Charter and served as a foundational statement of Allied war aims. It was later endorsed by other nations fighting the Axis powers.