WHAT ALL HAPPENED APRIL TO NOVEMBER 1971
Find out what all happened April to November 1971

Vietnam War: Vietnam Veterans Against the War begin a five-day demonstration in Washington, D.C.. (19. April 1971)

The Soviet space program's Mars 2 orbiter releases a descent module. It malfunctions and crashes, but it is the first man-made object to reach the surface of Mars. (27. November 1971)

Bangladesh Liberation War: The Pakistan Army and Razakars massacre approximately 3,000 Hindu emigrants in the Jathibhanga area of East Pakistan (now Bangladesh). (23. April 1971)

J. Edgar Hoover and John Mitchell announce the arrest of 20 of the Camden 28. (22. August 1971)

Qatar becomes an independent state. (3. September 1971)

Bahrain, Bhutan and Qatar join the United Nations. (21. September 1971)

Oman joins the Arab League. (29. September 1971)

In Cambodia, Khmer Rouge forces attack the city of Phnom Penh and its airport, killing 44, wounding at least 30 and damaging nine aircraft. (10. November 1971)

Soyuz 10 docks with Salyut 1. (24. April 1971)

The Dahlerau train disaster, the worst railway accident in West Germany, kills 46 people and injures 25 near Wuppertal. (27. May 1971)

Intel releases the world's first commercial single-chip microprocessor, the 4004. (15. November 1971)

Montagnard troops of South Vietnam revolt against the rule of Nguyen Khanh, killing 70 ethnic Vietnamese soldiers. (19. September 1971)

The Egyptian Constitution becomes official. (11. September 1971)

President Richard Nixon announces his decision to increase the rate of American troop withdrawals from Vietnam. (7. April 1971)

After only three years in business, rock promoter Bill Graham closes the Fillmore East in New York, New York, the "Church of Rock and Roll". (27. June 1971)

Mariner program: Mariner 9 is launched to map 70% of the surface, and to study temporal changes in the atmosphere and surface, of Mars. (30. May 1971)

An attempted coup fails in the African nation of Chad. The Government of Chad accuses Egypt of playing a role in the attempt and breaks off diplomatic relations. (27. August 1971)

Indian troops, partly aided by Mukti Bahini (Bengali guerrillas), defeat the Pakistan army in the Battle of Garibpur. (21. November 1971)

The Nepal Stock Exchange collapses. (20. October 1971)

The United States Supreme Court overturned the conviction of Paul Cohen for disturbing the peace, setting the precedent that vulgar writing is protected under the First Amendment to the United States Constitution. (7. June 1971)