WHAT HAPPENED IN 1921.
Look what happened the 1921.

Formation of the Iraqi Army. (6. January 1921)

Greco-Turkish War: The First Battle of İnönü, the first battle of the war, begins near Eskişehir in Anatolia. (9. January 1921)

Acting to restore confidence in baseball after the Black Sox Scandal, Judge Kenesaw Mountain Landis is elected as Major League Baseball's first commissioner. (12. January 1921)

The first Constitution of Turkey is adopted, making fundamental changes in the source and exercise of sovereignty by consecrating the principle of national sovereignty. (20. January 1921)

Kingdom of Romania establishes its legation in Helsinki. (15. February 1921)

The Young Communist League of Czechoslovakia is founded. (20. February 1921)

Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution. (21. February 1921)

Rezā Shāh takes control of Tehran during a successful coup (21. February 1921)

After Russian forces under Baron Roman von Ungern-Sternberg drive the Chinese out, the Bogd Khan is reinstalled as the emperor of Mongolia. (22. February 1921)

Tbilisi, capital of the Democratic Republic of Georgia, is occupied by Bolshevist Russia. (25. February 1921)

The International Working Union of Socialist Parties is founded in Vienna. (27. February 1921)

The Australian cricket team captained by Warwick Armstrong becomes the first team to complete a whitewash of The Ashes, something that would not be repeated for 86 years. (1. March 1921)

Portuguese Communist Party is founded as the Portuguese Section of the Communist International. (6. March 1921)

Spanish Premier Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid. (8. March 1921)

İstiklal Marşı was adopted in TBMM(Turkish grand national assembly). (12. March 1921)

Mongolia is proclaimed an independent monarchy, ruled by Russian military officer Roman von Ungern-Sternberg as a dictator. (13. March 1921)

The Second Republic of Poland adopts the March Constitution. (17. March 1921)

The second Peace of Riga between Poland and Soviet Union. (18. March 1921)

Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them. (19. March 1921)

Italian Fascists shoot from the Parenzana train at a group of children in Strunjan (Slovenia): two children are killed and five wounded. (19. March 1921)