On this day — March 7

becoming its 32nd member.

Equatorial Guinea.

The Real Irish Republican Army kills two British soldiers and injures two other soldiers and two civilians at Massereene Barracks, the first British military deaths in Northern Ireland since the end of The Troubles.

The British House of Commons votes to make the upper chamber, the House of Lords, 100% elected.

Indonesia, killing 21 people.

India.

Divers from the USS Preserver locate the crew cabin of Challenger on the ocean floor.

A group of 600 civil rights marchers are brutally attacked by state and local police in Selma, Alabama.

killing all 31 aboard.

Minneapolis, killing 15 people.

United Nations troops led by General Matthew Ridgway begin an assault against Chinese forces.

a member of the Islamic fundamentalist Fada'iyan-e Islam, outside a mosque in Tehran.

Günther Prien and the crew of German submarine U-47, one of the most successful U-boats of World War II, disappear without a trace.