After the Philippines became part of the U.S. there were positive and negative effects caused by imperialism.
Positive-
Public education established
Roads and railroads were built
Hospitals were built
The U.S. helped the Filipinos when the Japanese occupied the Philippines
The U.S. eventually helped the Philippines become an independent nation
Negative-
The Philippines revolted against American rule
The Philippine-American War
Over 1 million had died as a result of this war
Left without a strong leader
Struggled economically