Philippines - despite promising the Philippines independence after helping them gain freedom from Spain, the US made it a colony after a bloody war
Guam - The US made a bunch of territories protectorates, including Guam, despite promising those countries independence after the Spanish American War.
Cuba - Teller and Platt Amendments (paternalistic ‘need’ to take over Cuba)
Puerto Rico - Foraker and Jones Act
Panama Canal Zone - under Panama Canal
Hawaii - The US wanted to acquire Hawaii because sugar was a major export of Hawaii, and Hawaii was a midpoint between Asia and the US (strategic military base), American sugar planters and businessmen formed the Committee of Safety in Hawaii and forced Queen Liliuokalani to abdicate.