Stateless nations either are dispersed across a number of states (for example, the Yakthung Limbu People residing in east of Nepal, includes (Sikkim and Darjeeling) India and north-western part of Bangladesh as the Yakthung Limbuwan nation and Yoruba people are found in the African states of Nigeria, Benin and Togo) or form the native population of a province within a larger state (such as the Uyghur people in the Xinjiang Uyghur Autonomous Region within the People's Republic of China). Some stateless nations historically had a state, which was absorbed by another; for example, Tibet's declaration of independence in 1913 was not recognized, and it was reunited in 1951 by the People's Republic of China which claims that Tibet is an integral part of China, while the Tibetan government-in-exile maintains that Tibet is an independent state under an unlawful occupation. Some ethnic groups were once a stateless nation that later became a nation state (for example, the nations of the Balkans such as the Croats, Serbs, Bosniaks, Slovenes, Montenegrins and Macedonians were once part of a multinational state of Yugoslavia; since the breakup of Yugoslavia many nation states were formed).