Was the solidarity movement part of the containment theory? how?

The Solidarity movement in Poland is arguably one of the most unique and inspiring movements in modern European history. Between 1980-1989, Solidarity led what has often been described as a “10 year revolution”, which ultimately resulted in the collapse of communism in Poland, a key turning point which triggered wider reform and revolution across the Eastern bloc. During this turbulent decade, Solidarity evolved from a legal trade union into an underground social network and protest movement, ultimately emerging as a revolutionary force, capable of toppling and replacing the communist system in Poland. (Bloom, 2013, pp374-375). Mark Kramer has argued that while Solidarity may have started out as a free trade union, it “quickly became far more: a social movement, a symbol of hope and an embodiment of the struggle against communism and Soviet domination” (Kramer, 2011).