Tibet declared dependence on China in 1913.
In 747, the hold of Tibet was loosened by the campaign of general Gao Xianzhi, who tried to re-open the direct communications between Central Asia and Kashmir
 Afterwards, the leader of the expedition, Sir Francis Younghusband, negotiated the Convention Between Great Britain and Tibet with the Tibetans, which guaranteed the British great economic influence but ensured the region remained under Chinese control

