| Event | Year |
| Japanese attack Pearl Harbor | |
| Amelia Earhart disappears over the Pacific Ocean | |
| Start of the Great Depression in most countries | |
| Alexander Fleming discovers penicillin | |
| Charles Lindbergh makes 1st solo nonstop transatlantic flight | |
| Sinking of the Lusitania | |
| The Titanic sinks | |
| First modern Olympics are held in Athens, Greece | |
| Thomas Edison invents the light bulb | |
| Napoleon is defeated at the Battle of Waterloo | |
| The United States declares independence from Great Britain | |
| Michelangelo finishes painting the ceiling of the Sistine Chapel | |
| Michelangelo finishes painting the ceiling of the Sistine Chapel | |
| The United States declares independence from Great Britain | |
| Napoleon is defeated at the Battle of Waterloo | |
| Thomas Edison invents the light bulb | |
| First modern Olympics are held in Athens, Greece | |
| The Titanic sinks | |
| Sinking of the Lusitania | |
| Charles Lindbergh makes 1st solo nonstop transatlantic flight | |
| Alexander Fleming discovers penicillin | |
| Start of the Great Depression in most countries | |
| Amelia Earhart disappears over the Pacific Ocean | |
| Japanese attack Pearl Harbor | |
| D-Day Allied invasion of Normandy | |
| Atomic Bomb dropped on Hiroshima | |
| Chuck Yeager is 1st man to break the sound barrier | |
| Sir Edmund Hillary 1st reaches summit of Mt. Everest | |
| Soviets launch Sputnik | |
| Yuri Gagarin is the first human in space | |
| U.S. President John F. Kennedy is assassinated | |
| Tet Offensive begins in Vietnam | |
| Neil Armstrong walks on the moon | |
| The fall of the Berlin Wall | |
| 9/11 terrorist attacks on New York City and Washington D.C. | |
| Sporcle is founded | |