Synonyms for Protectorate:

n.

dictatorship, oligarchy, country, republic, monarchy, autarky, federation, nation, democracy. colony (noun)
dominion, territory, mandate.
protection (noun)
jurisdiction, guidance, protection, surety.
protectorate (noun)
associated state.
province (noun)
dominion, colony, mandate, territory.

Other synonyms:

colony, republic, federation. dictatorship, democracy, oligarchy, territory. country, monarchy, dominion, nation, autarky. Other relevant words:
federation, monarchy, surety, autarky, democracy, dominion, territory, colony, country, nation, republic, mandate, protection, oligarchy, jurisdiction, dictatorship, guidance.