Chinese Tibet
Having emerged from centuries of decline when their claim on Tibet weakened, especially after Britain intervened in 1904, China regained its national mojo in 1949 when Mao proclaimed The PRC after his victory in The Chinese Civil War.
Taking advantage of Britain's withdrawal from the Indian Sub-Continent in 1947, China launched an invasion of Tibet in 1950, followed by full annexation to China.
One consequence was a Tibetan diaspora, whose figure head became the Dalai Lama. In Tibet itself there has been, and continues to be, active resentment of, and resistance to, Chinese rule which has manifested itself in petitions, riots, and uprisings.