- 1713 - Emperor Charles VI issued the Pragmatic Sanction to ensure his daughter Maria Theresa would inherit the Habsburg monarchy.
- 1775 - The American Revolutionary War began with the Battles of Lexington and Concord.
- 1839 - The signing of the Treaty of London formally recognised Belgian independence from the United Kingdom of the Netherlands.
- 1971 - The first space station, Salyut 1, was launched.
- 1995 - Oklahoma City bombing: A car bomb was detonated in front of the Alfred P. Murrah Federal Building (pictured) in Oklahoma City, Oklahoma, killing 168 people.
- 1713 - Emperor Charles VI issued the Pragmatic Sanction to ensure his daughter Maria Theresa would inherit the Habsburg monarchy.
- 1775 - The American Revolutionary War began with the Battles of Lexington and Concord.
- 1839 - The signing of the Treaty of London formally recognised Belgian independence from the United Kingdom of the Netherlands.
- 1971 - The first space station, Salyut 1, was launched.
- 1995 - Oklahoma City bombing: A car bomb was detonated in front of the Alfred P. Murrah Federal Building (pictured) in Oklahoma City, Oklahoma, killing 168 people.