Eighty Years’ War: The Dutch fleet destroys the anchored Spanish fleet at Gibraltar.
23 April 215 BC
A temple is built on the Capitoline Hill dedicated to Venus Erycina to commemorate the Roman defeat at Lake Trasimene.
21 April 1987
The Tamil Tigers are blamed for a car bomb that detonates in the Sri Lankan capital city of Colombo, killing 106 people.
18 April 1847
American victory at the battle of Cerro Gordo opens the way for invasion of Mexico.
17 April 1349
The rule of the Bavand dynasty in Mazandaran is brought to an end by the murder of Hasan II.
16 April 1943
Albert Hofmann accidentally discovers the hallucinogenic effects of the research drug LSD.