Solidarity in Poland refers to a social movement and trade union founded in 1980, which played a crucial role in opposing the authoritarian communist regime. This movement not only united workers across various sectors but also became a symbol of resistance against oppression, pushing for political reforms and greater freedoms in a totalitarian state. The rise of Solidarity marked a pivotal moment in Eastern European history, leading to significant changes in the political landscape and contributing to the eventual collapse of communist rule in Poland.