On April 6, a Jewish pogrom took place in Chișinău.
At the congress in London, the Russian Social Democratic Labour Party split into the Mensheviks, led by Plekhanov, and the Bolsheviks, led by Lenin.
On December 18, under a treaty between the United States and Panama, the Panama Canal Zone is transferred to the United States in perpetuity, and Panama will receive an annual lease payment.