Complex sentence: He became active in the Labour-Progressive Party (as the Communist Party of Canada was known) and was one of the founders of the International Woodworkers of America and served as one of the union's organizers as well as itsgeneral secretary from 1942 to 1946.
Split into simpler sentences: He became active in the Labour-Progressive Party (as the Communist Party of Canada was known). He was one of the founders of the International Woodworkers of America and served as one of the union's organizers as well as its general secretary from 1942 to 1946.