Complex sentence: Burma Workers Party, until 1958 the Burma Workers and Peasants Party, was a communist party in Burma, formed on December 8 1950, by leftist elements of the Socialist Party.
Split into simpler sentences: Burma Workers Party, until 1958 the Burma Workers and Peasants Party, was a communist party in Burma. The party was founded on December 8 1950, by leftist elements of the Socialist Party.