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MCMXXI) was a
starting on Saturday of the
Gregorian calendar and a
common year starting on Friday of the
Julian calendar, the 1921st year of the
Common Era (CE) and
Anno Domini (AD) designations, the 921st year of the
2nd millennium, the 21st year of the
20th century, and the 2nd year of the
1920s decade. As of the start of 1921, the Gregorian calendar was 13 days ahead of the Julian calendar, which remained in localized use until 1923.
- March –
Group Settlement Scheme in
Western Australia begins.
March 1 – The city of
Kiryū, located in
Gunma Prefecture, Japan, is founded.
March 4 –
Warren G. Harding is
sworn in as the 29th President of the United States.
March 5 –
Irish War of Independence:
Irish Republican Army kills
March 6 – The
Portuguese Communist Party is founded.
March 12 – The
İstiklâl Marşı (Independence March), the Turkish national anthem, is officially adopted.
March 13 –
Occupation of Mongolia: The Russian
White Army captures
Mongolia from China.
Roman von Ungern-Sternberg declares himself ruler.
March 14 –
Armenian Soghomon Tehlirian assassinates Mehmed Talaat, former Interior Minister of
March 16 – Six
Irish Republican Army men of the
Forgotten Ten are hanged in Mountjoy Prison, Dublin.
March 18 – The second
Peace of Riga ends the
Polish–Soviet War. A permanent border is established between the Polish and Soviet states.
March 20 –
Upper Silesia plebiscite votes for re-annexation to Germany.
March 24 – The
1921 Women's Olympiad begins in Monte Carlo, first international
women's sports event
March 31 –
Abkhazia becomes a republic
беларуская (тарашкевіца): 1921
srpskohrvatski / српскохрватски: 1921