Why did the filipino insurrection against the united states take the form of guerrilla warfare rather than all-out war?

The correct answer is:

Filipino rebels did not have enough weapons to fight American troops in all-out war.

The Philippine-American War had two phases. The first one (February to November of 1899) saw Aguinaldo, the Philippine leader, attempting unsuccessfully to fight an all-out war against the better equipped American troops. The lack of equipment pushed the second phase of the Filipinos strategy. They shifted to guerrilla-style warfare from November of 1899 until the spring of 1902.

b, the anti immigrant fervor