Failing to receive help from Tibet, the Druk Desi signed a Treaty of Peace with the British East India Company on April 25, 1774. Bhutan agreed to return to its pre-1730 boundaries, paid a symbolic tribute of five horses to Britain, and, among other concessions, allowed the British to harvest timber in Bhutan. Subsequent missions to Bhutan were made by the British in 1776, 1777, and 1783, and commerce was opened between British India and Bhutan, and, for a short time, Tibet. In 1784, the British turned over to Bhutanese control Bengal Duars territory, where boundaries were poorly defined. As in its other foreign territories, Bhutan left administration of the Bengal Duars territory to local officials and collected its revenues. Although major trade and political relations failed to develop between Bhutan and Britain, the British had replaced the Tibetans as the major external threat.