WHAT ALL HAPPENED MAY TO OCTOBER 1955
Find out what all happened May to October 1955

The Union Mundial pro Interlingua is founded at the first Interlingua congress in Tours, France. (28. July 1955)

In the United States, a night-time F5 tornado strikes the small city of Udall, Kansas, killing 80 and injuring 273. It is the deadliest tornado to ever occur in the state and the 23rd deadliest in the U.S. (25. May 1955)

Disneyland Hotel opens to the public in Anaheim, California. (5. October 1955)

Operation Passage to Freedom, the evacuation of 310,000 Vietnamese civilians, soldiers and non-Vietnamese members of the French Army from communist North Vietnam to South Vietnam following the end of the First Indochina War, ends. (18. May 1955)

The Mickey Mouse Club debuts on ABC. (3. October 1955)

In the United Kingdom, the television channel ITV goes live for the first time. (22. September 1955)

Austria regains its independence as the Allied occupation following World War II ends. (12. May 1955)

The Russell–Einstein Manifesto is released by Bertrand Russell in London, England, United Kingdom. (9. July 1955)

Mir Mine, the first diamond mine in the USSR, is discovered. (13. June 1955)

The Royal Jordanian Air Force is founded. (25. September 1955)

A Soviet Navy Zulu class submarine becomes the first submarine to launch a ballistic missile. (16. September 1955)

Ngô Đình Diệm declares himself Premier of South Vietnam. (26. October 1955)

The military coup to unseat President Juan Perón of Argentina is launched at midnight. (16. September 1955)

Eighty-three spectators are killed and at least 100 are injured after an Austin-Healey and a Mercedes-Benz collide at the 24 Hours of Le Mans, the deadliest ever accident in motorsports. (11. June 1955)

In Morocco, a force of Berbers from the Atlas Mountains region of Algeria raid two rural settlements and kill 77 French nationals. (20. August 1955)

Eighteen Nobel laureates sign the Mainau Declaration against nuclear weapons, later co-signed by thirty-four others. (15. July 1955)

West Germany gains full sovereignty. (5. May 1955)

After the last Allied troops have left the country and following the provisions of the Austrian Independence Treaty, Austria declares permanent neutrality. (26. October 1955)

In the Northeast United States, severe flooding caused by Hurricane Diane, claims 200 lives. (19. August 1955)

Cold War: Eight Communist bloc countries, including the Soviet Union, sign a mutual defense treaty called the Warsaw Pact. (14. May 1955)