The document summarizes the challenges to Spanish authority in the Philippines from 1560-1820, including revolts by Filipinos seeking independence. It describes threats from the Portuguese and Dutch to Spanish rule during this period through military attacks and battles. It then outlines several early revolts by Filipinos, their causes including abuses by Spaniards and a desire to regain lost freedom, and their ultimate failures usually due to Spanish military superiority or lack of unity among Filipinos. It also discusses the fierce and prolonged resistance of Moro and mountain peoples in the south and interior to Spanish colonization.