Delhi in June 1310 with a huge amount of wealth obtained from the defeated king. Invasion by Delhi Sultanate In 1323, Ghiyath al-Din Tughluq sent his son Ulugh Khan on an expedition to the Kakatiya capital of Warangal. The ensuing Siege of Warangal resulted in the annexation of Warangal, and the end of the Kakatiya dynasty. Prataparudra was taken captive, and sent to Delhi, but it is believed he died en route. Ulugh Khan ruled briefly as viceroy, until he returned to Delhi to succeed the throne. As early as 1330, the Musunuri Nayaks who served as army chiefs for Kakatiya kingdom united the various Telugu clans and recovered Warangal from the viceroy of the Delhi Sultanate and ruled for half a century. Surrounded by more significant states, by the 15th century these new entities had ceded to the Bahmani Sultanate and the Sangama dynasty, the latter of which evolved to become the Vijayanagara empire. Bahmani and Deccan Sultanates The Bahmani Sultanate ruled the region in the 15th century. In 1463, Sultan Muhammad Shah Bahmani II dispatched Sultan Quli Qutb-ul-Mulk to the Telangana region to quell disturbances. Sultan Quli quelled the disturbance and was rewarded as the administrator of the region. He established a base at Kakatiya hill fortress of Golconda which he strengthened and expanded considerably. By the end of the century, Quli ruled from Golconda as the subedar (governor) of the Telangana region. Quli enjoyed virtual independence from Bidar, where the Bahmani Sultanate was then based. In 1518, the Bahmani Sultanate disintegrated into five different kingdoms, with the others based in Ahmednagar, Berar, Bidar and Bijapur. Sultan Quli declared independence from the Bahmani rule and established the Golconda Sultanate under the title "Sultan Quli Qutub Shah", he rebuilt the mud-fort of Golconda and named the city Muhammad Nagar. During this period, the city of Hyderabad was established by Muhammad Quli Qutb Shah in 1591, on the banks of the Musi River. The Charminar and Mecca Masjid were constructed to form a centerpiece of the city. Over the years, Hyderabad would grow as an important trading center for diamonds, pearls, arms and steel. The Qutb Shahi rulers were patrons of both Indo-Persian and the local Telugu art and culture. Early Indo-Islamic type of architecture is reflected in the Qutb Shahi buildings. Some examples of it include the Golconda Fort, Qutb Shahi tombs, Charminar, Mecca Masjid, Khairtabad Mosque, Taramati Baradari