Ayatollah Ruhollah Khomeini 1900
- 1756 - Britain declared war on France, beginning the French and Indian War.
- 1792 - The New York Stock Exchange was founded at 70 Wall Street by 24 brokers.
- 1875 - The first Kentucky Derby was run at Louisville, KY.
- 1881 - Frederick Douglass was appointed recorder of deeds for Washington, DC.
- 1932 - The U.S. Congress changed the name "Porto Rico" to "Puerto Rico."
- 1940 - Germany occupied Brussels, Belgium and began the invasion of France.