Complex sentence: Like the area's other tribes, the Guaraní were cannibals, but they usually ate only their most valiant foes captured in battle in the hope that they would gain the bravery and power of their victims.
Split into simpler sentences: Like the area's other tribes, the Guaraní were cannibals. But they usually ate only their most valiant foes captured in battle in the hope that they would gain the bravery and power of their victims.