High Quality Content by WIKIPEDIA articles! The Communist Party of Australia was founded in 1920 and dissolved in 1991; it was succeeded by the Socialist Party of Australia, which then renamed itself, becoming the current Communist Party of Australia. The CPA achieved its greatest political strength in the 1940s and faced an attempted banning in 1951. Though it never presented a major challenge to the established order in Australia, it did have significant influence on the trade unions, social movements, and the national culture.