The first Mohammedan invasion (1206 &1226 AD) of Kamrupa took place during the reign of a king called Prithu who was killed in a battle with Illtutmish's son Nassiruddin in 1228. During the second invasion by Ikhtiyaruddin Yuzbak or Tughril Khan, about 1257 AD, the king of Kamrupa Saindhya (1250-1270AD) transferred the capital 'Kamrup Nagar' to Kamatapur in the west. From then onwards, Kamata's ruler was called Kamateshwar. During the last part of 14th century, Arimatta was the ruler of Gaur (the northern region of former Kamatapur) who had his capital at Vaidyagar. And after the invasion of the Mughals in the 15th century many Muslims settled in this State and can be said to be the first Muslim settlers of this region. Chutia Kingdom During the early part of the 13th century, when the Ahoms established their rule over Assam with the capital at Sibsagar, the Sovansiri area and the area by the banks of the Disang river were under the control of the Chutias. According to popular Chutia legend, Chutia king Birpal established his rule at Sadia in 1189 AD. He was succeeded by ten kings of whom the eighth king Dhirnarayan or Dharmadhwajpal, in his old age, handed over his kingdom to his son-in-law Nitai or Nityapal. Later on Nityapal's incompetent rule gave a wonderful chance to the Ahom king Suhungmung or Dihingia Raja, who annexed it to the Ahom kingdom.Chutia Kingdom During the early part of the 13th century, when the Ahoms established their rule over Assam with the capital at Sibsagar, the Sovansiri area and the area by the banks of the Disang river were under the control of the Chutias. According to popular Chutia legend, Chutia king Birpal established his rule at Sadia in 1189 AD. He was succeeded by ten kings of whom the eighth king Dhirnarayan or Dharmadhwajpal, in his old age, handed over his kingdom to his son-in-law Nitai or Nityapal. Later on Nityapal's incompetent rule gave a wonderful chance to the Ahom king Suhungmung or Dihingia Raja, who annexed it to the Ahom kingdom. Barobhuyans The Bhuyans were petty chief who had their principalities towards the east of Kamrup-Kamata area. The title 'Baro' is a title of honour given to twelve chieftains who, even though were not kings, established kingdoms which were small on the basis of their strength. They took up arms against the Ahoms also, but it was the Ahom king Pratap Singha who crushed the rebellion of the Baro Bhuyans. Chutia Kingdom During the early part of the 13th century, when the Ahoms established their rule over Assam with the capital at Sibsagar, the Sovansiri area and the area by the banks of the Disang river were under the control of the Chutias. According to popular Chutia legend, Chutia king Birpal established his rule at Sadia in 1189 AD. He was succeeded by ten kings of whom the eighth king Dhirnarayan or Dharmadhwajpal, in his old age, handed over his kingdom to his son-in-law Nitai or Nityapal. Later on Nityapal's incompetent rule gave a wonderful chance to the Ahom king Suhungmung or Dihingia Raja, who annexed it to the Ahom kingdom. Barobhuyans The Bhuyans were petty chief who had their principalities towards the east of Kamrup-Kamata area. The title 'Baro' is a title of honour given to twelve chieftains who, even though were not kings, established kingdoms which were small on the basis of their strength. They took up arms against the Ahoms also, but it was the Ahom king Pratap Singha who crushed the rebellion of the Baro Bhuyans. Chutia Kingdom During the early part of the 13th century, when the Ahoms established their rule over Assam with the capital at Sibsagar, the Sovansiri area and the area by the banks of the Disang river were under the control of the Chutias. According to popular Chutia legend, Chutia king Birpal established his rule at Sadia in 1189 AD. He was succeeded by ten kings of whom the eighth king Dhirnarayan or Dharmadhwajpal, in his old age, handed over his kingdom to his son-in-law Nitai or Nityapal. Later on Nityapal's incompetent rule gave a wonderful chance to the Ahom king Suhungmung or Dihingia Raja, who annexed it to the Ahom kingdom. Barobhuyans The Bhuyans were petty chief who had their principalities towards the east of Kamrup-Kamata area. The title 'Baro' is a title of honour given to twelve chieftains who, even though were not kings, established kingdoms which were small on the basis of their strength. They took up arms against the Ahoms also, but it was the Ahom king Pratap Singha who crushed the rebellion of the Baro Bhuyans. Chutia Kingdom During the early part of the 13th century, when the Ahoms established their rule over Assam with the capital at Sibsagar, the Sovansiri area and the area by the banks of the Disang river were under the control of the Chutias. According to popular Chutia legend, Chutia king Birpal established his rule at Sadia in 1189 AD. He was succeeded by ten kings of whom the eighth king Dhirnarayan or Dharmadhwajpal, in his old age, handed over his kingdom to his son-in-law Nitai or Nityapal. Later on Nityapal's incompetent rule gave a wonderful chance to the Ahom king Suhungmung or Dihingia Raja, who annexed it to the Ahom kingdom.Chutia Kingdom During the early part of the 13th century, when the Ahoms established their rule over Assam with the capital at Sibsagar, the Sovansiri area and the area by the banks of the Disang river were under the control of the Chutias. According to popular Chutia legend, Chutia king Birpal established his rule at Sadia in 1189 AD. He was succeeded by ten kings of whom the eighth king Dhirnarayan or Dharmadhwajpal, in his old age, handed over his kingdom to his son-in-law Nitai or Nityapal. Later on Nityapal's incompetent rule gave a wonderful chance to the Ahom king Suhungmung or Dihingia Raja, who annexed it to the Ahom kingdom. Barobhuyans The Bhuyans were petty chief who had their principalities towards the east of Kamrup-Kamata area. The title 'Baro' is a title of honour given to twelve chieftains who, even though were not kings, established kingdoms which were small on the basis of their strength. They took up arms against the Ahoms also, but it was the Ahom king Pratap Singha who crushed the rebellion of the Baro Bhuyans. Chutia Kingdom During the early part of the 13th century, when the Ahoms established their rule over Assam with the capital at Sibsagar, the Sovansiri area and the area by the banks of the Disang river were under the control of the Chutias. According to popular Chutia legend, Chutia king Birpal established his rule at Sadia in 1189 AD. He was succeeded by ten kings of whom the eighth king Dhirnarayan or Dharmadhwajpal, in his old age, handed over his kingdom to his son-in-law Nitai or Nityapal. Later on Nityapal's incompetent rule gave a wonderful chance to the Ahom king Suhungmung or Dihingia Raja, who annexed it to the Ahom kingdom. Barobhuyans The Bhuyans were petty chief who had their principalities towards the east of Kamrup-Kamata area. The title 'Baro' is a title of honour given to twelve chieftains who, even though were not kings, established kingdoms which were small on the basis of their strength. They took up arms against the Ahoms also, but it was the Ahom king Pratap Singha who crushed the rebellion of the Baro Bhuyans. Barobhuyans The Bhuyans were petty chief who had their principalities towards the east of Kamrup-Kamata area. The title 'Baro' is a title of honour given to twelve chieftains who, even though were not kings, established kingdoms which were small on the basis of their strength. They took up arms against the Ahoms also, but it was the Ahom king Pratap Singha who crushed the rebellion of the Baro Bhuyans. Barobhuyans The Bhuyans were petty chief who had their principalities towards the east of Kamrup-Kamata area. The title 'Baro' is a title of honour given to twelve chieftains who, even though were not kings, established kingdoms which were small on the basis of their strength. They took up arms against the Ahoms also, but it was the Ahom king Pratap Singha who crushed the rebellion of the Baro Bhuyans. Koch Kingdom Bishwa Singha (1515-1540) laid the foundation of the Koch dominion over Kamata kingdom in the early part of the 16th century and established his capital in Cooch-Bihar. He was succeeded by his son Malladeva who took the name Naranarayana. His brother Sukladhvaj became his commander-in-chief. He was also called 'Chilarai' or 'Kite King' because of his ability to attack the enemy like a Chila (hawk or Kite). Naranarayan's rule was the most glorious epoch of Koch kingdom. It was during his reign that the Ahoms suffered defeat in 1562. Chilarai also annexed the Kachari kingdom, Manipur, Tripura, Jayantia and Srihatta and extended its boundaries. Then again there was a battle with the Nawab of Gour. During that time Chilarai was attacked by small-pox and died on the banks of the Gangas. Naranarayan died in 1584 after a reign of nearly fifty years (1540-1584). During his rule, the power of the Koch kings reached its zenith. Naranarayan's rule is remarkable, for it was during his reign that the Assamese literature and culture flourished, which was inaugurated by Srimanta Sankardeva.