The Adil Shahi or Adilshahi, was a Shia, and later Sunni Muslim, dynasty founded by Yusuf Adil Shah, that ruled the Sultanate of Bijapur, centred on present-day Bijapur district, Karnataka in India, in the Western area of the Deccan region of Southern India from 1489 to 1686. Bijapur had been a province of the Bahmani Sultanate (1347–1518), before its political decline in the last quarter of the 15th century and eventual break-up in 1518. The Bijapur Sultanate was absorbed into the Mughal Empire on 12 September 1686, after its conquest by the Emperor Aurangzeb. The founder of the dynasty, Yusuf Adil Shah (1490–1510), was appointed Bahmani governor of the province, before creating a de facto independent Bijapur state. Yusuf and his son, Ismail, generally used the title Adil Khan. 'Khan', meaning 'Chief' in various Central Asian cultures and adopted in Persian, conferred a lower status than 'Shah', indicating royal rank. Only with the rule of Yusuf's grandson, Ibrahim Adil Shah I (1534–1558), did the title of Adil Shah come into common use. Even then, Bijapur rulers recognized Safavid Persian suzerainty over their realm. The Bijapur Sultanate's borders changed considerably throughout its history. Its northern boundary remained relatively stable, straddling contemporary Southern Maharashtra and Northern Karnataka. The Sultanate expanded southward, first with the conquest of the Raichur Doab following the defeat of the Vijayanagar empire at the Battle of Talikota in 1565. Later campaigns, notably during the reign of Mohammed Adil Shah (1627–1657), extended Bijapur's formal borders and nominal authority as far south as Bangalore. Bijapur was bounded on the West by the Portuguese state of Goa and on the East by the Sultanate of Golconda, ruled by the Qutb Shahi dynasty. The former Bahmani provincial capital of Bijapur remained the capital of the Sultanate throughout its existence. After modest earlier developments, Ibrahim Adil Shah I (1534–1558) and Ali Adil Shah I (1558–1579) remodelled Bijapur, providing the citadel and city walls, congregational mosque, core royal palaces and major water supply infrastructure. Their successors, Ibrahim Adil Shah II (1580–1627), Mohammed Adil Shah (1627–1657) and Ali Adil Shah II (1657–1672), further adorned Bijapur with palaces, mosques, mausoleum and other structures, considered to be some of the finest examples of Deccan Sultanate and Indo-Islamic Architecture. Bijapur was caught up in the instability and conflict resulting from the collapse of the Bahmani Empire. Constant warring, both with the Vijayanagar Empire and the other Deccan Sultanates,