There were three
Burmese invasion of Assam between 1817 and 1826, during which time the
Kingdom of Assam (Ahom) came under the control of
Burma from 1821 to 1825. Locally, this period, called the
manor din by the
Assamese and
Chahi-Taret Khuntakpa (seven years of devastation) in
Manipuri, is remembered with horror. It was the climactic period of the 600-year history of the Assamese kingdom. The sharp drop in population due both to depredations as well emigrations left the erstwhile kingdom in shambles. The
British, who were earlier reluctant to colonise Assam, came into direct contact with a belligerent Burmese occupying force. Following the
First Anglo-Burmese War they annexed not just the Assam but also Burma.