 Complete the following phrase:  British forces led by Sir Francis Younghusband entered Tibet in 1904 and made a treaty with the Tibetans. In 1906, the British government sought Chinese acceptance of suzerainty over Tibet as part of the Anglo-Chinese Convention on Tibet, but was rebuffed by the Chinese envoy, who insisted on sovereignty. In 1907, Britain and Russia acknowledged Chinese suzerainty over Tibet. In 1910, Qing China sent a military expedition to Tibet and came very close to taking it over, along with neighboring Himalayan kingdoms; however the Qing dynasty fell to the 