Explanation:

The British invasion in 1904 instigated by Lord Curzon (1859 – 1925),  the Viceroy of India, and led by the imperial adventurer Colonel Sir Francis Edward Younghusband (1863-1942), was in part a mission to curtail Russia’s expansionist raids into Central Asia and in part, a colonial effort to establish British interests and open lucrative trading routes between India, Tibet and China. The Treaty of Lhasa, officially the Convention Between Great Britain and Tibet, was a treaty signed in 1904 between Tibet and the United Kingdom of Great Britain and Ireland, in Lhasa, the capital of Tibet, then under administrative rule of the Qing dynasty.