WHAT ALL HAPPENED FEBRUARY TO NOVEMBER 1921
Find out what all happened February to November 1921

Researchers at the University of Toronto led by biochemist Frederick Banting prove that the hormone insulin regulates blood sugar. (27. July 1921)

A truce in the Irish War of Independence comes into effect. (11. July 1921)

The trial of Sacco and Vanzetti opens. (24. May 1921)

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

A storage silo in Oppau, Germany, explodes, killing 500-600 people. (21. September 1921)

Former President of the United States William Howard Taft is sworn in as 10th Chief Justice of the U.S. Supreme Court, becoming the only person ever to hold both offices. (11. July 1921)

The Royal Australian Air Force is formed. (31. March 1921)

U.S. President Warren G. Harding appoints former President William Howard Taft Chief Justice of the United States. (30. June 1921)

Roscoe "Fatty" Arbuckle party in San Francisco ends with the death of the young actress Virginia Rappe: one of the first scandals of the Hollywood community. (5. September 1921)

British airship R-38 experiences structural failure over Hull in England and crashes in the Humber estuary. Of her 49 British and American training crew, only 4 survive. (23. August 1921)

The Partito Nazionale Fascista (PNF), National Fascist Party, comes into existence. (9. November 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)

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

The Sturmabteilung or SA, whose members were known as "brownshirts", physically assault Adolf Hitler's opposition after his speech in Munich. (4. November 1921)

The Tomb of the Unknowns is dedicated by US President Warren G. Harding at Arlington National Cemetery. (11. November 1921)

The Soviet republics of Russia, Armenia, Azerbaijan, and Georgia sign the Treaty of Kars with the Grand National Assembly of Turkey to establish the contemporary borders between Turkey and the South Caucasus states. (13. October 1921)

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

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

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

George Melford's silent film, The Sheik, starring Rudolph Valentino, premiers. (21. October 1921)