Complex sentence: He returned to Corsica and came into conflict with Paoli, who had decided to split with France and sabotage a French assault on the Sardinian island of La Maddalena, where Bonaparte was one of the expedition leaders.
Split into simpler sentences: He returned to Corsica and came into conflict with Paoli. He had decided to split with France and sabotage a French assault on the Sardinian island of La Maddalena, where Bonaparte was one of the expedition leaders.