Complex sentence: After his university studies, Moumoni retunred to Cotonou, where he practised as a physician until 1959, and would later spend much of his adult life outside Dahomey's borders.
Split into simpler sentences: After his university studies, Moumoni retured to Cotonou, where he practised medicine there as a physician until 1959. He would later spend much of his adult life outside Dahomey's borders.