IB 20th Century TImeline

Events

April 4, 1968
July 16, 1969 - July 24, 1969
April 30, 1975
December 1979
June 4, 1989
December 20, 1989 - January 31, 1990
August 2, 1990 - February 28, 1991
November 9, 1991
January 1, 1994
December 19, 1998 - February 12, 1999