Complex sentence: The United Progressive Party (UPP) was created in Zambia by Simon Kapwepwe and others, all from the ruling United National Independence Party (UNIP) in about August 1971.
Split into simpler sentences: The United Progressive Party (UPP) was a political party in Zambia. The party was established by Simon Kapwepwe and several others who had left the ruling United National Independence Party (UNIP) in August 1971.