Complex sentence: The Philippine Revolution (1896--1898), called the "Tagalog War" by the Spanish, was an armed military conflict between the people of the Philippines and the Spanish colonial authorities which resulted in the secession of the Philippine Islands from the Spanish Empire.
Split into simpler sentences: The Philippine Revolution (1896--1898), called the "Tagalog War" by the Spanish, was an armed military conflict between the people of the Philippines and Spanish colonial authorities. It resulted in the secession of the Philippine Islands from the Spanish Empire.