Event Category Key Historical Details Most Significant Event Austria-Hungary declares war on Serbia, starting World War I (1914) Top Key Events Execution of Robespierre • Battle of Ankara • July Crisis escalation • Tangshan Earthquake • IRA ends armed campaign Key Battles That Day Battle of Cascina, Battle of Ankara, Battle of Warsaw, Battle of…

Event Category Key Historical Details Most Significant Event Arrest of Maximilien Robespierre, ending the Reign of Terror (1794) Top 10 Key Events Battle of Dunsinane (1054) • Battle of Bouvines (1214) • Founding of Ottoman state territory (1299) • Robespierre arrested (1794) • Van Gogh shoots himself (1890) • Insulin proven effective (1921) • Maiden…

Event Category Key Historical Details Most Significant Event Gamal Abdel Nasser nationalizes the Suez Canal (1956) Top 10 Key Events Act of Abjuration declares Dutch independence (1581) • New York ratifies the U.S. Constitution (1788) • Liberia declares independence (1847) • Potsdam Declaration issued to Japan (1945) • Executive Order 9981 desegregates the U.S. military…

Event Category Key Historical Details Most Significant Event Louis Blériot completes the first flight across the English Channel in a heavier-than-air machine (1909) Top 10 Key Events Blériot’s Channel crossing (1909) • Byzantine recapture of Constantinople (1261) • Birth of Louise Joy Brown, first IVF baby (1978) • Constantine I proclaimed Roman emperor (306) •…

Event Category Key Historical Details Most Significant Event Apollo 11 splashes down safely in the Pacific Ocean (1969) Top 10 Key Events Fall of Stirling Castle (1304) • Mary Queen of Scots forced to abdicate (1567) • Founding of Detroit (1701) • Brigham Young enters Salt Lake Valley (1847) • Kellogg–Briand Pact takes effect (1929)…

Event Category Key Historical Details Most Significant Event Austria-Hungary issues the July Ultimatum to Serbia (1914), setting off World War I Top 10 Key Events Pope John V elected (685) • Typographer patented by William Austin Burt (1829) • July Ultimatum issued to Serbia (1914) • Chinese Communist Party founded (1921) • Fox acquires Movietone…

Event Category Key Historical Details Most Significant Event The world’s first competitive motor race takes place between Paris and Rouen (1894) Top 10 Key Events Battle of Falkirk (1298) • First Motor Race in France (1894) • Battle of Salamanca (1812) • Battle of Atlanta (1864) • King David Hotel Bombing (1946) • Soviet Space…

Event Category Key Historical Details Most Significant Event Neil Armstrong and Buzz Aldrin walk on the Moon (1969) Top 10 Key Events Temple of Artemis burned (356 BC) • Battle of the Pyramids (1798) • Wild Bill Hickok shootout (1865) • First Jesse James train robbery (1873) • Scopes Trial verdict (1925) • First female…

Jerusalem, July 20, 1951. King Abdullah I of Jordan walks into the Al-Aqsa Mosque for Friday prayers with his young grandson beside him. A gunman steps out of the crowd and shoots him dead before prayers even begin. It’s one of dozens of moments packed onto a single square on the calendar — assassinations, sieges,…