20th century events By 20brownty 1900 boxer rebellion 1910 world war1 the decade was dominated by war 1920 woman rights movement women got the right to vote for the first time 1930 Adolf Hitler he becomes chancellor of Germany 1940 world war ll 1950 the Korean war began 1960 Vietnam war 1970 the Vietnam war the Vietnam war is still in full swing 1980 the end of the cold war 1990 a war in Congo breaks out