Suzerainty

Rights and obligations of a dominant state

Suzerainty includes the rights and obligations of a person, state, or other polity which controls the foreign policy and relations of a tributary state but allows the tributary state internal autonomy. Where the subordinate party is called a vassal, vassal state, or tributary state, the dominant party is called a suzerain. The rights and obligations of a vassal are called vassalage, and the rights and obligations of a suzerain are called suzerainty.

This keyword could refer to multiple things. Here are some suggestions: