<Li> Cuban Missile Crisis </Li> <Ul> <Li> 1980 Moscow Olympics </Li> </Ul> <Li> 1980 Moscow Olympics </Li> <Tr> <Td> Decline (show) <Ul> <Li> Singing Revolution </Li> </Ul> <Ul> <Li> Polish Round Table Agreement </Li> </Ul> <Ul> <Li> Revolutions of 1989 </Li> </Ul> <Ul> <Li> Fall of the Berlin Wall </Li> </Ul> January 1991 <Ul> <Li> in Lithuania </Li> <Li> in Latvia </Li> </Ul> <Ul> <Li> Breakup of Yugoslavia </Li> </Ul> <Ul> <Li> Yugoslav Wars </Li> </Ul> <Ul> <Li> End of the Soviet Union </Li> </Ul> <Ul> <Li> Fall of communism in Albania </Li> </Ul> </Td> </Tr>

When did poland hungary and czechoslovakia declare independence