Original: 1989 & ndash ; Solidarity 's victory in the first ( somewhat ) free parliamentary elections in post-war Poland sparks off a succession of peaceful anti-communist revolutions in Eastern Europe , leads to the creation of the so-called Contract Sejm and begins the Autumn of Nations .
Simplified: 1989 - Solidaritys victory in the first partly free parliamentary elections in post-war Poland sparks off a succession of peaceful anti-communist revolutions in Eastern Europe .