Final answer:
The Solidarity movement in Poland, which began as a trade union and evolved into a political movement, played a crucial role in the country's journey towards independence from the Communist regime.
Step-by-step explanation:
The Solidarity movement in Poland was a key factor in the country's path to independence. Solidarity, which started as a trade union, gained widespread support and became a political movement advocating for democratic reforms in Poland. The movement's success was evident when Lech Wałęsa, a Solidarity candidate, won Poland's presidential election in 1990. This victory marked the collapse of Soviet Union's power in Eastern Europe and led to Poland's transition to a democratic government and a capitalist economy.