China–United States relations

The relationship between the People's Republic of China (PRC) and the United States of America (USA) has been complex and at times contentious since the establishment of the PRC and the retreat of the government of the Republic of China to Taiwan in 1949. Since the normalization of relations in the 1970s, the US–China relationship has been marked by numerous perennial disputes including the political status of Taiwan, territorial disputes in the South China Sea, and more recently the treatment of Uyghurs in Xinjiang. They have significant economic ties and are significantly intertwined, yet they also have a global hegemonic great power rivalry. As of 2023, China and the United States are the world's second-largest and largest economies by nominal GDP, as well as the largest and second-largest economies by GDP (PPP) respectively. Collectively, they account for 44.2% of the global nominal GDP, and 34.7% of global PPP-adjusted GDP.