Amdo (Tibetan: ཨ༌མདོ; Chinese: 安多; pinyin: Ānduō) is one of the three traditional regions of Tibet, the other two being Ü-Tsang and Kham; it is also the birthplace of the 14th Dalai Lama. Amdo encompasses a large area from the Machu River (Yellow River) to the Drichu river (Yangtze River). While historically, culturally, and ethnically a Tibetan area, Amdo was administered by a series of local rulers since the mid-18th century and the Dalai Lamas have not governed the area directly since that time. From 1917 to 1928, much of Amdo was occupied intermittently by the Hui Muslim warlords of the Ma Clique. In 1928, the Ma Clique joined the Kuomintang, and during the period from 1928 to 1949, much of Amdo was gradually assimilated into the Qinghai province (and part of Gansu province) of the Kuo