Chinese troops expanded into southern, inner Mongolia, Tibet, and India. At the north of Mongolia, remained the Soviet sphere. They took control of the country after Mongolia was declared an Autonomous Area. In a brutal assault, bwtween 1950-1951, China took control of Tibet. The Chinese promised aoutonomy to Tibeatans, whose religious leader was the Dalai Lama. When China controled Tibet by the late 1950s, the Dalai Lama fled to India. Tibeteans responded by protests.