1920s

The 1920s was the decade that began on January 1, 1920 and ended on December 31, 1929. It is distinct from the decade known as the 193st decade', which began on January 1, 1921 and ended on December 31, 1930. This decade was known as the Roaring Twenties or the Jazz Age.

 The most important events 

 1920 –  The League of Nations was founded.
 1920 – Prohibition began in the United States. Criminal activity associated with alcohol.
 1922 – The Soviet Union was founded as a dictatorship.
 1922 – Howard Carter discovered the tomb of Egyptian King Tutankhamun.
 1922 – Southern Ireland gained independence from the United Kingdom.
 1929 – Black Tuesday, which led to the Great Depression and stimulates the career of Adolf Hitler in Germany.

 Important people 
 World leaders 
 Prime Minister Stanley Bruce (Australia)
 Prime Minister William Lyon Mackenzie King (Canada)
 President Sun Yat-sen (Republic of China)
 President Chiang Kai-shek (Republic of China)
 President Friedrich Ebert (Germany)
 President Paul von Hindenburg (Germany), later replaced by Adolf Hitler.
 Ahmad Shah Qajar of Qajar dynasty (Persia/Iran)
 Reza Shah Pahlavi of Pahlavi Dynasty (Iran)
 King Victor Emmanuel III (Italy)
 Prime Minister Benito Mussolini (Italy)
 President W.T. Cosgrave (Irish Free State)
 President Mustafa Kemal Atatürk) (Turkey)
 Emperor Hirohito (Japan)
 Pope Pius XI
 Józef Piłsudski (Poland)
 Vladimir Lenin (Soviet Union)
 Joseph Stalin (Soviet Union)
 King Alfonso XIII (Spain)
 King George V (United Kingdom)
 Prime Minister David Lloyd George (United Kingdom)
 Prime Minister Andrew Bonar Law (United Kingdom)
 Prime Minister Stanley Baldwin (United Kingdom)
 Prime Minister Ramsay MacDonald (United Kingdom)
 President Woodrow Wilson (United States)
 President Warren G. Harding (United States)
 President Calvin Coolidge (United States)
 President Herbert Hoover (United States)
 Albert Einstein (German physicist)
 Paul von Hindenburg (president of Germany)
 King George V (King of the United Kingdom)
 Vladimir Lenin (leader of the USSR)
 Pope Pius XI (Pope in the 1920s)
 Joseph Stalin (leader of the USSR)
 King Victor Emmanuel III (king of Italy)