Noun
vassal state (plural vassal states)
A state that is subordinate to another; government chiefly directed by the interests of an overlord or patron state.
Coordinate term: satellite state
At some point in the early second millennium BCE, the Northwest Semitic speaking Amorite kingdom of Mari to the south subdued Urkesh and made it a vassal state. Source: Internet
Chongzong submitted to the Jin demand of the Liao emperor and Western Xia became a vassal state of Jin. Source: Internet
Judah at this time was a vassal state of Assyria, but Assyrian power collapsed in the 630s, and around 622 Josiah and his supporters launched a bid for independence expressed as loyalty to " Yahweh alone ". Source: Internet
The Ottomans expanded into Europe, reducing Bulgaria to a vassal state by 1366 and taking over Serbia after its defeat at the Battle of Kosovo in 1389. Source: Internet
He treated Scotland as a feudal vassal state and repeatedly humiliated the new king. Source: Internet
The Sicilians had elected Peter III of Aragon as their king and sought papal confirmation, in vain, though they were willing to reconfirm Sicily as a vassal state of the papacy. Source: Internet