| First Event | Number of Years | Second Event |
| The beginning of the First World War | |
| Construction begins on the Berlin Wall | |
| The sinking of the Titanic | |
| Yuri Gagarin becomes the first human in space | |
| The Russian Revolution | |
| A new nation conceived in liberty is brought forth | |
| Galileo begins observing Jupiter's moons | |
| Julius Caesar crosses the Rubicon | |
| Anne Frank goes into hiding | |
| The Wright brothers' first flight | |
| 10BC | |
| Fidel Castro becomes the president of Cuba | |
| The Japanese attack Pearl Harbor | |
| The beginning of the Hundred Years' War | |
| The assassination of Abraham Lincoln | |
| Pluto is discovered | |
| Operation Desert Storm begins | |
| Napoleon is exiled to Elba | |
| Capt. Cook first arrives in Australia | |
| The Slavery Abolition Act abolishes slavery in (most of) the British Empire | |