period of Afghan rule in Bengal which also came to an end in 1574 with its
conquest by Akbar.
Assam
The history of the Hindu kingdom of Kamarupa in the 13th century is
practically unknown apart from scattered references to Muslim invasions
from Bengal. During the first six decades of that century Bakhtiyar Khalji
and two of his successors invaded Kamarupa. There are references to a
kingdom called Kamata which had its centre outside Kamarupa proper.
Whether it was a new kingdom under a new dynasty or the old kingdom of
Kamarupa with a new capital is difficult to ascertain. Durlabh Narayan ruled
Kamata at the end of the 13th century. The Ahom invasion of his kingdom
resulted in the conclusion of an alliance which was strengthened by the
marriage of his daughter (Rajani) with the Ahom ruler, Sukhangpha. Muslim
chronicles talk about the annexation of the south-eastern districts of Bengal
(Mymensingh, Sylhet, Tippera and Chittagong) by the Sultans of Bengal in
the first half of the 14th century. But it is not possible to ascertain clearly
from these chronicles the exact impact that the annexations had on the
kingdom of Kamata.
    Khens, a tribal people who had brahmanised themselves, made Kamata a
powerful kingdom in the early 15th century. Nilambara, probably the last rule
of this dynasty, ruled over extensive territories including Kamarupa,
Goalpara, Mymensingh and Sylhet with his capital at Kamatapur (near Kooch
Bihar in West Bengal). But he was ultimately overthrown and his kingdom
annexed by Ala-ud-din Hussain Shah of Bengal by the close of the 15th
century.
    Vishasimha of the Koch tribe set himself as the ruler of Kamata in about
1515. The greatest ruler of this new dynasty was, however, Narayan, during
whose reign the kingdom reached its zenith of greatness. But unfortunately
there was dissension between the king and his nobles as a result of which the
kingdom had to be divided (l570s) into two parts, namely Kooch Bihar and
Kooch Hajo. This partition led to perpetual hostility between them with the
result that their neighbours, the Ahoms and the Mughals intervened. In 1639
the western portion (Kooch Bihar) came under the supremacy of the Mughals