Collapse of the Soviet Union

When did the Soviet Union officially collapse?

What Soviet Bloc country had a democratic resistance movement against the USSR in 1987?

What was the nickname of President Reagan's "Strategic Defense Initiative"?

In 1987, Reagan and Gorbachev signed a treaty to do what?

Which US president called the USSR the "evil empire"?

When did the Berlin Wall come down?

What was Gorbachev's plan allowing more freedoms and openness?

What was Gorbachev's plan to restructure the economy and government?

Who was the final leader of the USSR?