(A) by political measures
(B) ** by military action
(C) with economic pressure
(D) through diplomatic relations
EXPLANATIONS BELOW
Concept note-1: -Americans who advocated annexation evinced a variety of motivations: desire for commercial opportunities in Asia, concern that the Filipinos were incapable of self-rule, and fear that if the United States did not take control of the islands, another power (such as Germany or Japan) might do so.
Concept note-2: -With the signing of the Treaty of Paris on December 10, 1898, Spain ceded the Philippines to the United States. The interim U.S. military government of the Philippine Islands experienced a period of great political turbulence, characterized by the Philippine–American War.
Concept note-3: -Crisis Phase (December 10, 1898-October 31, 1899): The United States government formally acquired the Philippines from Spain with the signing of the Treaty of Paris on December 10, 1898. The U.S. government declared military rule in the Philippines on December 21, 1898.
Concept note-4: -Tensions arose after the United States annexed the Philippines under the Treaty of Paris at the conclusion of the Spanish–American War rather than acknowledging the Philippines’ declaration of independence, developing into the eruption of open battle.