WHAT ALL HAPPENED APRIL TO AUGUST 1955
Find out what all happened April to August 1955

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

The Bandung Conference ends: 29 non-aligned nations of Asia and Africa finish a meeting that condemns colonialism, racism, and the Cold War. (24. April 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)

The polio vaccine, developed by Dr. Jonas Salk, is declared safe and effective. (12. April 1955)

First ascent of Kangchenjunga (8,586 m.), the third-highest mountain in the world, by a British expedition led by Charles Evans. Joe Brown and George Band reached the summit on May 25, followed by Norman Hardie and Tony Streather the next day. (25. May 1955)

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

In a futile effort to topple President Juan Perón, rogue aircraft pilots of the Argentine Navy drop several bombs upon an unarmed crowd demonstrating in favor of Perón in Buenos Aires, killing 364 and injuring at least 800. At the same time on the ground, some forces soldiers attempt to stage a coup but are suppressed by loyal forces. (16. June 1955)

Nineteen days after bus workers went on strike in Singapore, rioting breaks out and seriously impacts Singapore's bid for independence. (12. May 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)

The Air India Kashmir Princess is bombed and crashes in a failed assassination attempt on Zhou Enlai by the Kuomintang. (11. April 1955)

Black teenager Emmett Till is brutally murdered in Mississippi, galvanizing the nascent American Civil Rights Movement. (28. August 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)

Chile becomes a signatory to the Buenos Aires copyright treaty. (14. June 1955)

Cold War: West Germany joins NATO. (9. May 1955)

The EOKA rebellion against the British Empire begins in Cyprus, with the goal of obtaining the desired unification ("enosis") with Greece. (1. April 1955)

Disneyland is dedicated and opened by Walt Disney in Anaheim, California. (17. July 1955)

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

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

Tokyo Telecommunications Engineering, the precursor to Sony, sells its first transistor radios in Japan. (7. August 1955)

29 nations meet at Bandung, Indonesia, for the first Asian-African Conference. (18. April 1955)