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:

Gorbachev's reforms in the Soviet Union, such as perestroika (restructuring) and glasnost (openness), weakened the communist system and influenced the political climate in Eastern Europe. This created an environment where the revolutions of 1989 could occur. The election of Solidarity candidates in Poland (1989), Hungary implementing a free - market economy (part of broader changes in 1989), and the end of communist rule in Czechoslovakia (1989) were events that happened during or as a result of the 1989 revolutions, not before them.

Answer:

Gorbachev made reforms in the Soviet Union.