protectorate

/prəˈtɛktərɪt/
noun
  1. A country or territory that is controlled and protected by a more powerful country.
    • A protectorate often has its own local government but relies on the stronger nation for defense.
    • In the 19th century, many African territories became European protectorates.
    • The island was a British protectorate until it gained independence in 1965.
  2. The relationship or status of being under such protection or control.
    • The nation's protectorate status ended when it signed a new agreement.
    • During the protectorate, the local rulers kept some authority over daily affairs.
    • The treaty established a protectorate over the coastal region.