in Uch, thereby establishing the city as a centre of the Qadiriyya Sufi order which would later become the dominant order of Punjab. Following the death of Shah Husayn, Uch's Samma rulers quickly allied themselves with Baloch chieftain Mir Chakar Rind. Mughal Guru Nanak, the founder of Sikhism, is believed to have visited Uch in the early 1500s, and left behind 5 relics, after meeting with the descendants of Jalaludin Bukhari. In 1525 Uch was invaded by rulers of the Arghun dynasty of northern Sindh, before falling to the forces of Pashtun king Sher Shah Suri in 1540.Mughal Emperor Humayun entered Uch in late 1540, but was not welcomed by the city's inhabitants, and was defeated by the forces of Sher Shah Suri. The city reverted to Arghun rule following the expulsion of Humayun, and the fall of Sher Shah Suri's short-lived empire. Uch became a part of the Mughal Empire during the reign of Akbar, and the city was a district of Multan province. Under Mughal rule, the city continued to flourish as a centre of religious scholarship. In 1680, the renowned Punjabi poet, Bulleh Shah, who is regarded as a saint by both Sufis and Sikhs, was born in Uch. In 1751, Uch was attacked by Sardar Jahan Khan, general in the army of Ahmad Shah Durrani. Bahawalapur princely state Uch came under the control of the Bahawalpur princely state, which declared independence in 1748 following the collapse of the Durrani empire. Bahawalpur had become a vassal of the Sikh Empire under Maharaja Ranjit Singh, before becoming a dependency of the British Empire defined under an 1833 treaty. By 1836, the ruling Abbasi family stopped paying tribute to the Sikhs, and declared independence. Bahawalpur's ruling Abbasi family aligned themselves with the British during the First and Second Anglo-Sikh Wars, thereby guaranteeing its survival as a princely state. Flooding in the early 19th century caused serious damage to many of the city's tombs, including structural problems and the deterioration of masonry and finishes. Modern Upon the independence of Pakistan in 1947, Uch had a population of around 2-3,000 people. As part of Bahawalpur state, Uch was acceded to the new Pakistani state, but remained part of the autonomous Bahawalpur state until 1955 when it was fully amalgamated into Pakistan. Uch remains a relatively small city, but is an important tourist and pilgrimage destination on account of its numerous tombs