1919 8th Congress of the Russian Communist Party re-establishes a five-member Politburo which becomes the center of political power in the Soviet Union. Original members Vladimir Lenin, Leon Trotsky, Joseph Stalin, Lev Kamenev and Nikolai Krestinsky
1920 Perserikatan Communist of India (PKI) political party forms
1921 Germany announces it will be unable to meet its Great War reparation payments
1922 1st airplane lands at the US Capitol in Washington, D.C.
1922 KMJ-AM in Fresno CA begins radio transmissions
1922 WEW-AM in Saint Louis MO begins radio transmissions
1923 Frank Silver & Irving Conn release "Yes, We Have No Bananas"