Question

which event preceded the revolutions of 1989?
solidarity candidates were elected in poland.
hungary implemented a free market economy.
communist rule ended in czechoslovakia.
gorbachev made reforms in the soviet union.

Explanation:

• Solidarity candidates were elected in Poland: This event occurred in 1989 (June 1989 elections), which is part of the 1989 revolutions rather than preceding them.
• Hungary implemented a free - market economy: Hungary started significant economic reforms in the 1980s, but the full - scale implementation of a free - market economy was more in the context of the post - 1989 transition.
• Communist rule ended in Czechoslovakia: This was a result of the Velvet Revolution in late 1989.
• Gorbachev made reforms in the Soviet Union: Gorbachev's policies of perestroika (economic restructuring) and glasnost (openness) in the Soviet Union (starting in the mid - 1980s) weakened the Soviet - style communist system across Eastern Europe. These reforms created an environment where the 1989 revolutions (which were anti - communist movements in Eastern Europe) could take place.

Answer:

Gorbachev made reforms in the Soviet Union.