The political status of Taiwan has been a key political issue for the People's Republic of China (PRC). In 1971, the support of African nations was crucial in the PRC joining the United Nations (UN), taking over the seat of the ROC on Taiwan. However, while many African countries such as Algeria, Egypt and Zambia have stressed their support to the PRC's one-China policy, Swaziland maintains relations with Taipei. For the quest of a permanent UN Security Council seat for Africa, Nigeria, the most populous African country, relies on Chinese support while Egypt looks to U.S. backing.