The British proceed to annex the formerly…

The British proceed to annex the formerly Bhutanese-controlled Assam Duars in 1841, paying a compensation of ten thousand rupees a year to Bhutan. (The Duars, of Dooas, are the alluvial floodplains in northeastern India that lie south of the outer foothills of the Himalayas and north of the Brahmaputra River basin.)

In 1842 Bhutan gives up control to the British of some of the troublesome Bengal Duars territory it has administered since 1784.