|Foundation of the League of Nations
|Created following the first World War in order to maintain peace.
|Establishment of the Communist Party of China
|This marked the beginning of communist movements in China.
|Discovery of Insulin
|This crucial medical discovery was made by Frederick Banting and Charles Best.
|Formation of the USSR
|The Union of Soviet Socialist Republics (USSR) was created in Russia.
|Turkey becomes a Republic
|Turkey was proclaimed a republic on October 29, after abolishing Ottoman Sultanate.
|Death of Lenin
|The founder of the Russian Communist Party, Vladimir Lenin, died leading to a power struggle eventually won by Joseph Stalin.
|Invention of Television
|John Logie Baird, a Scottish inventor, invents the first working television system.
|Queen Elizabeth II Born
|The future Queen of the United Kingdom and other Commonwealth realms was born on April 21.
|Release of The Jazz Singer
|The first feature-length motion picture with not only a synchronized recorded music score but also lip-synchronous singing and speech in several isolated sequences.
|Discovery of penicillin
|Sir Alexander Fleming, a Scottish biologist and pharmacologist, discovered the world’s first broad-spectrum antibiotic, penicillin.
|Start of The Great Depression
|Began with the Wall Street Crash in October, this was considered the most severe worldwide economic depression of the 20th century.