Wikipedia:Selected anniversaries/August 21
August 21: Independence Day in Latvia (1991)
- 1680 - Pueblo Indians captured Santa Fe from the Spanish.
- 1772 - A coup led by Gustav III was completed by adopting a new Instrument of Government, ending the Age of Liberty in Sweden.
- 1831 - Nat Turner led a slave revolt in Southampton County, Virginia.
- 1959 - Hawaii was admitted as the 50th U.S. state.
- 1986 - Toxic gas erupted from volcanic Lake Nyos in Cameroon, killing over 1700 people.