Qu'aiti-dynasty sultanate that rose in the mid-19th century to control coastal and central Hadhramaut in southeastern Yemen, the larger of the two Hadhrami sultanates; funded partly by Qu'aiti wealth from service in the Nizam of Hyderabad's army in India.
Signed a protectorate treaty with Britain in 1888 (Aden Protectorate), later part of the Protectorate of South Arabia; overrun by the National Liberation Front and integrated into independent South Yemen in November 1967.
Indian Ocean Migrants and State Formation in Hadhramaut: Reforming the HomelandUlrike Freitag · 2003
Brill scholarly history of Hadhramaut covering the rise of the Qu'aiti sultanate, its Hyderabad connection and the British protectorate; verified via Open Library.