Trucial States

The Trucial States, also known as the Trucial Coast, or the Trucial Sheikhdoms, or Trucial Oman, was a group of tribal confederations in southeastern Arabia south of the Persian Gulf whose leaders had signed protective treaties with the British Empire between 1820 and 1892. The Trucial States remained an informal British protectorate until the treaties were revoked on 1 December 1971. The following day, six of the sheikhdoms—Dubai, Abu Dhabi, Sharjah, Ajman, Umm Al Quwain and Fujairah—formed the United Arab Emirates; the seventh, Ras Al Khaimah, joined on 10 February 1972.