Final answer:
The revolutions of 1989 were preceded by the fall of the Berlin Wall, marking the end of communism in Eastern Europe.
Step-by-step explanation:
The event that preceded the revolutions of 1989 was the fall of the Berlin Wall. The Berlin Wall was a physical barrier that separated East and West Germany and symbolized the divide between communist and capitalist ideologies. Its fall in 1989 marked a turning point in history, leading to the collapse of communist regimes across Eastern Europe.
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