Berlin Wall came down in 1989.
Off the top of my head, here are major changes since 1985:
West and East Germany reunited (1990)
USSR collapsed (circa 1991; new nations from therein: Belarus, Ukraine, Latvia, Estonia, Lithuania, the Caucus states, *stan except for Afghanistan and Pakistan)
Yugoslavia collapsed (circa 1995; new nations therein: Croatia, Serbia, Bosnia and Herzogovina, etc...)
Czechoslovakia split (Czech Republic and Slovakia)
Kosovo declared independence from Serbia (2008)
South Sudan declared independence from Sudan (2011)