Complex sentence: A number of local Labour parties and clubs participated in the formation of the Communist Party of Canada in 1921 and the "Independent Labour Party" and other labour groups helped found the Cooperative Commonwealth Federation (CCF) in 1932.
Split into simpler sentences: A number of local Labour parties and clubs participated in the formation of the Communist Party of Canada in 1921. The Independent Labour Party and other labour groups helped found the Cooperative Commonwealth Federation (CCF) in 1932.