This document summarizes European imperialism in Southeast Asia and the Pacific Islands between the 18th-20th centuries. It discusses the major European powers that colonized the region (Britain, Dutch, France, US), the geographic location of these territories, and that Westerners wanted the lands and resources. It then provides more details on the colonies established by each power in Southeast Asia and the US expansion in the Pacific Islands, including conflicts between imperial powers and with nationalist groups seeking independence.