WHAT ALL HAPPENED APRIL TO SEPTEMBER 1957
Find out what all happened April to September 1957

President Ngo Dinh Diem of South Vietnam becomes the first foreign head of state to make a state visit to Australia. (2. September 1957)

20 MCi (740 petabecquerels) of radioactive material is released in an explosion at the Soviet Mayak nuclear plant at Chelyabinsk. (29. September 1957)

The Republic of Tunisia is proclaimed. (25. July 1957)

Central High School in Little Rock, Arkansas, is integrated by the use of United States Army troops. (25. September 1957)

In Haiti, François Duvalier is elected president. (22. September 1957)

The International Atomic Energy Agency is established. (29. July 1957)

Cuban Revolution: Fulgencio Batista bombs the revolt in Cienfuegos. (5. September 1957)

The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile. (21. August 1957)

Rawya Ateya takes her seat in the National Assembly of Egypt, thereby becoming the first female parliamentarian in the Arab world. (14. July 1957)

At Malden Island in the Pacific, Britain tests its first hydrogen bomb in Operation Grapple. (15. May 1957)

Greek shipping tycoon Aristotle Onassis buys the Hellenic National Airlines (TAE) and founds Olympic Airlines. (6. April 1957)

John Diefenbaker leads the Progressive Conservative Party of Canada to a stunning upset in the Canadian federal election, 1957, ending 22 years of Liberal Party government. (10. June 1957)

Malaysia's constitution comes into force. (27. August 1957)

Althea Gibson wins the Wimbledon championships, becoming the first black athlete to do so. (6. July 1957)

The BBC broadcasts the spaghetti tree hoax on its current affairs programme Panorama. (1. April 1957)

Camp Nou, the largest stadium in Europe, is opened in Barcelona. (24. September 1957)

34 of 35 people aboard are killed when a Vickers Viking airliner crashes in Hampshire England. (1. May 1957)

United Kingdom agrees to Singaporean self-rule. (11. April 1957)

First American underground nuclear bomb test (part of Operation Plumbbob). (19. September 1957)

The Soviet Union launches an R-12 missile for the first time (in the Kapustin Yar). (22. June 1957)