Complex sentence: He also made a blood compact with Magellan, as a sign of friendship; according to Pigafetta, it was Humabon who had requested Magellan to kill his rival, Lapu Lapu, the Datu (chieftain) of nearby Mactan Island.
Split into simpler sentences: He also made a blood compact with Magellan, as a sign of friendship. According to Pigafetta, it was Humabon who had requested Magellan to kill his rival Lapu Lapu, the Datu (chieftain) of nearby Mactan island.