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. It was part of the revolutions of 1989, not a preceding event.
• Hungary implemented a free - market economy: Hungary started economic reforms in the 1960s, but the significant political changes related to the revolutions of 1989 in Hungary (such as opening the border with Austria) were in 1989.
• Communist rule ended in Czechoslovakia: The Velvet Revolution in Czechoslovakia (which ended communist rule) was in 1989.
• Gorbachev made reforms in the Soviet Union: Gorbachev's policies of perestroika (economic restructuring) and glasnost (openness) started in the mid - 1980s. These reforms weakened the Soviet - style communist system across Eastern Europe, creating an environment conducive to the revolutions of 1989.

Answer:

Gorbachev made reforms in the Soviet Union.