Which Soviet leader introduced the reform policies of glasnost and perestroika that helped trigger the collapse of communism?

The 1989 Tiananmen Square protests demanding democratic reform were violently suppressed in which country?

The fall of the Berlin Wall in 1989 divided which city into east and west?

Which Romanian dictator was overthrown and executed on Christmas Day 1989?

The Solidarity trade union movement that challenged communist rule in the 1980s began in which country?

The Velvet Revolution of 1989 peacefully ended communist rule in which country?

Which playwright and dissident became the first president of post-communist Czechoslovakia?

Which trade union leader led the Solidarity movement in Poland and later became the country's president?

When the Soviet Union collapsed, it broke up into how many independent countries?

In which year did the Soviet Union officially dissolve?