The Earl of Warwick, who fought on both sides in the War of the Roses, is killed at the Battle of Barnet with the defeat of the Lancastrians.
Bartolome Ferrelo returns to Spain after discovering a large bay in the New World (San Francisco).
The first abolitionist society in United States is organized in Philadelphia.
The first Pony Express rider arrives in San Francisco with mail originating in St. Joseph, Missouri.
President Abraham Lincoln is assassinated in Ford's Theater by John Wilkes Booth.
The passenger liner Titanic--deemed unsinkable--strikes an iceberg on her maiden voyage and begins to sink. The ship will go under the next day with a loss of 1,500 lives.
The Viet Minh invade Laos with 40,00 troops in their war against French colonial forces.