WHAT ALL HAPPENED JANUARY TO JULY 1920
Find out what all happened January to July 1920

The Grand National Assembly of Turkey (TBMM) is founded in Ankara. (23. April 1920)

The second Palmer Raid takes place with another 6,000 suspected communists and anarchists arrested and held without trial. These raids take place in several U.S. cities. (2. January 1920)

The Royal Canadian Mounted Police begins operations. (1. February 1920)

During the U.S. Republican National Convention in Chicago, U.S. Republican Party leaders gathered in a room at the Blackstone Hotel to come to a consensus on their candidate for the U.S. presidential election, leading the Associated Press to first coin the political phrase "smoke-filled room". (11. June 1920)

Azerbaijan is added to the Soviet Union. (28. April 1920)

The Netherlands refuses to surrender the exiled Kaiser Wilhelm II of Germany to the Allies. (23. January 1920)

The first game of the Negro National League baseball is played in Indianapolis. (2. May 1920)

Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized. (9. February 1920)

The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite. (15. July 1920)

The Arab Kingdom of Syria, the first modern Arab state to come into existence, is established. (8. March 1920)

The Soviet–Lithuanian Peace Treaty is signed. Soviet Russia recognizes independent Lithuania. (12. July 1920)

Czechoslovak National assembly adopted the Constitution. (29. February 1920)

The New York State Assembly refuses to seat five duly elected Socialist assemblymen. (7. January 1920)

Telecommunications: the first transatlantic two-way radio broadcast takes place. (25. July 1920)

France occupies Memel. (2. February 1920)

Former Ford Motor Company executive Henry Leland launches the Lincoln Motor Company which he later sold to his former employer. (26. January 1920)

The United States Senate votes against joining the League of Nations. (19. January 1920)

Kiev Offensive: Polish troops led by Józef Piłsudski and Edward Rydz-Śmigły and assisted by a symbolic Ukrainian force capture Kiev only to be driven out by the Red Army counter-offensive a month later. (7. May 1920)

Hungary loses 71% of its territory and 63% of its population when the Treaty of Trianon is signed in Paris. (4. June 1920)

The national council in Turkey denounces the government of Sultan Mehmed VI and announces a temporary constitution. (23. April 1920)