1983: Reagan Delivers “Star Wars” Speech

On March 23, 1983, President Ronald Reagan proposed the development of the Strategic Defense Initiative (SDI), a space and ground-based defense system to intercept...

1868: President Andrew Johnson Impeached

On February 24, 1868, Andrew Johnson became the first U.S. president to be impeached; the Senate subsequently acquitted him by a single vote. House Impeaches...

1911: Triangle Shirtwaist Factory Fire Kills 146

On March 25, 1911, a fire at New York City’s crowded, unsafe Triangle Shirtwaist Factory killed 146 workers. Public outrage over the incident galvanized...

1773: American Patriots Carry Out Boston Tea Party

On Dec. 16, 1773, members of the Sons of Liberty boarded British ships in Boston Harbor and destroyed their cargo of tea, taking another...

1974: Heiress Patty Hearst Kidnapped

On February 4, 1974, members of the Symbionese Liberation Army kidnapped Patty Hearst, 19, granddaughter of newspaper mogul William Randolph Hearst. After months of...