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Sunamganj
In the ancient period, Sunamganj was part of the Laur Kingdom. After the conquest of Sylhet (Kingdom of Gauiurh) in 1303 by Muslims under the spiritual guidance of Shah Jalal, Shah Kamal Quhafah established a capital in Shaharpara with the aid of his twelve disciples and his second son, Shah Muazzamuddin Qureshi, who also maintained a second sub-administration office at Nizgaon on the bank of the river Surma, present day Shologhar (there is now Shologhar Masjid and madrasa) in Sunamganj town, which was administered by one of his descendants. Between the latter part of 1300 CE and 1765 CE, the present-day Sunamganj district was a part of Iqlim-e-Muazzamabad, i.e. the state of Muazzamabad, which was an independent state until 1620 when it was conquered by the mighty Mughal of Delhi. The last sultan of Muazzamabad was Hamid Qureshi Khan, who was a descendant of Shah Kamal Quhafah and he was widely known by his appellation of Shamsher Khan. After the fall of Jalalabad (present-day Sylhet), Shamsher Khan, accepted the post of Nawab-cum-Fauzadar and remained so until his death at the Battle of Giria on 29 April 1740 along with Sarfaraz Khan, Nawab of Bengala.
Tanguar Haor (Bengali: টাঙ্গুয়ার হাওর), located in the Dharmapasha and Tahirpur upazilas of Sunamganj District in Bangladesh, is a unique wetland ecosystem of national importance and has come into international focus. The area of Tanguar Haor including 46 villages within the haor is about 100 square kilometres (39 sq mi) of which 2,802.36 ha2 is wetland. It is the source of livelihood for more than 40,000 people. Bangladesh declared it an Ecologically Critical Area in 1999 considering its critical condition as a result of overexploitation of its natural resources.[2][3]
Every winter the haor is home to about 200 types of migratory birds. In 1999–2000, the government earned 7,073,184 takas as revenue just from fisheries of the haor. There are more than 140 species of fresh water fish in the haor. The more predominant among them are: ayir, Cat fish, baim, tara, gutum, gulsha, tengra, titna, garia, beti, kakia. Gulli, balua, ban tulsi, nalkhagra and other freshwater wetland trees are in this haor.