Complex sentence: Naipaul showed interest in the clans of the Bagandan people, and when Uganda's prime minister Milton Obote overthrew their ruler, the Kabaka of Buganda, Naipaul was critical of the British press for not condemning the action enough.
Split into simpler sentences: Naipaul showed interest in the clans of the Bagandan people. When Uganda's prime minister Milton Obote overthrew their ruler, the Kabaka of Buganda, Naipaul was critical of the British press for not condemning the action enough.