1957

1957 (MCMLVII) was a common year starting on Tuesday of the Gregorian calendar, the 1957th year of the Common Era (CE) and Anno Domini (AD) designations, the 957th year of the 2nd millennium, the 57th year of the 20th century, and the 8th year of the 1950s decade.

Flag of Ghana , the first country in colonial Africa to gain independence
Anti-Rightist Campaigns kill more than 500,000 people in China.
Federation of Malaya gains independence from the British Empire
October 4: Sputnik program begins, the first satellite launched into space
Laika the dog became the first animal to orbit Earth.