What happend on 21st August

20.08
22.08
1991

Latvia declares its full independence from the Soviet Union.

1987

Hard rock band Guns 'N Roses release their classic debut Appetite for Destruction.

1986

Toxic gas erupts from volcanic Lake Nyos in Cameroon, killing over 1700 people.

1976

Operation Paul Bunyan at Panmunjeom, Korea

1971

Black Panther George Jackson is shot and killed in the prison yard at California's San Quentin prison.

1968

Soviet Union-dominated Warsaw Pact troops invade Czechoslovakia.

1959

President Eisenhower signs an executive order proclaiming Hawaii the 50th state of the union.

1944

Dumbarton Oaks Conference, prelude to the United Nations, begins.

1911

The Mona Lisa was stolen by a Louvre employee.

1888

The first successful adding machine in the United States was patented by William Seward Burroughs.