Tibet , province-level administrative region of China , located in a high-mountain area in the southwestern part of the country. It is officially called the Tibet (Chinese Xizang) Autonomous Region (TAR). Throughout its long history, Tibet at times has governed itself as an independent state and at other times has had various levels of association with China . Regardless of China 's involvement in Tibetan affairs, Tibet 's internal government was for centuries a theocracy (state governed by religious leaders), under the leadership of Buddhist lamas, or monks.
In 1959 the Dalai Lama (spiritual leader of Tibetan Buddhism and at that time the head of Tibet 's internal government) fled to India during a Tibetan revolt against Chinese control in the region. China then took complete control of Tibet , installing a sympathetic Tibetan ruler and, in 1965, replacing the theocracy with a Communist administration.