The Mcmahon line on Indo-China Border

Wikimedia Commons by QuartierLatin1968

Title- The map is an azimuthal equal-area projection. The Line of Control through Kashmir is green. Where the line of control along the Indo-Chinese frontier coincides with one side's territorial claims, the line is pink; borders claimed but not controlled are purple. Non-disputed boundaries are in red.

The task of defining the boundary between India and Tibet was entrusted ti Sir Henry Mcmahon, a British plenipotentiary to the conference, who was the Secretary to Govt. of India in foreign and political department.

This boundary line was accepted in tripartite conference held at Simla in 1914, between The British India, China and Tibet.

This line is 1040 Km long, extending from the tri-junction of Bhutan, India and Tibet. This boundary was accepted by Tibet, and China was given a copy of the same map. 

This line runs through the crest of Himalayan Ranges, which form a part of watershed of Brahmaputra. The continuity of the line is broken by Lohit, Dihang, Pubansiri and Nyamjang rivers.

Till 1954, China did not raise any objection to the boundary line, and thereafter declined to accept the accord. Now after the annexation of Tibet by China, the accord and the Mcmahon line are the things of the past. This boundary line may get revived, as and when Tibet becomes Independent. But It may not happen until China follows the suit of USSR.