Im using my hypothesis for a short project proposal my topic would be ______
Depending on the context (also: historical time) of the situation, mutual agreement between the two places and the terms actually used in their legal documents, it could be:
a dependency
a colony
a territory (for example: Puerto Rico is an unincorporated US territory)
and some others: people in the past have used different words to mask the fact that they dominate another country against their will...
