Tibet Area (administrative division)
The Tibet Area (Chinese: 西藏地方; pinyin: Xīzàng Dìfāng, also translated as Tibet Region in the 1954 Sino-Indian Agreement) was a province-level administrative division of China in the 20th century. It was de jure created after the establishment of the Republic of China in 1912, and nominally includes the Ü-Tsang (central Tibet) and Ngari (western Tibet) areas, but not the Amdo and Kham areas.
Source: Wikipedia — Tibet Area (administrative division) (CC BY-SA 4.0)