Complex sentence: The Bantu speakers of east Africa are believed to have originated from the Congo basin and in precolonial times "utu" was the main philosophy governing them, it meant everything that was done was for the benefit of the whole community.
Split into simpler sentences: The Bantu speakers of East Africa are believed to have originated from the Congo basin and in precolonial times "utu" was the main philosophy governing them. It meant that everything that was done was for the benefit of the whole community.