Births on May 30

Pita Amor, Mexican poet and author (d. 2000)

Guadalupe Teresa Amor Schmidtlein (May 30, 1918 – May 8, 2000), who wrote as Pita Amor, was a Mexican poet.

3 Mar

World War I
Russia signs the Treaty of Brest-Litovsk, agreeing to withdraw from World War I, and conceding German control of the Baltic States, Belarus and Ukraine. It also conceded Turkish control of Ardahan, Kars and Batumi.
2 May

Chevrolet Motor Company
General Motors acquires the Chevrolet Motor Company of Delaware.
24 Jun

Montreal
First airmail service in Canada from Montreal to Toronto.
4 Jul

Nicholas II of Russia
Bolsheviks kill Tsar Nicholas II of Russia and his family (Julian calendar date).
9 Nov

Wilhelm II, German Emperor
Kaiser Wilhelm II of Germany abdicates after the German Revolution, and Germany is proclaimed a Republic.