Complex sentence: In 1925, Chambers joined the Communist Party of the United States (CPUSA) (then known as the Workers Party of America) and wrote and edited for Communist publications, including "The Daily Worker" newspaper and "The New Masses" magazine.
Split into simpler sentences: In 1925, Chambers joined the Communist Party of the United States (CPUSA) (then known as the Workers Party of America). Chambers wrote and edited for Communist publications, including "The Daily Worker" newspaper and "The New Masses" magazine.