Four-Stage Theory of the Republic of China its remaining major component – the island of Taiwan, as opposed to its decades-long claim to all China since losing the civil war in 1949. Prior to this speech, the government officials used "Republic of China" when the name of the state was used. Lee's usage is considered as a departure from the convention, as this usage can be interpreted in the sense that the Republic of China's sovereignty does not extend to mainland China, which the People's Republic of China controls. The Democratic Progressive Party's 1999 Resolution on Taiwan's Future, which is accorded equivalent status as the Party charter,
Taiwan independence movement and change the island's name from the “Republic of China” to “Taiwan,” and apply for membership in the United Nations. A second view is that Taiwan is already an independent nation with the official name “Republic Of China,” which has been independent (i.e. de facto separate from mainland China) since the end of the Chinese Civil War in 1949, when the ROC lost control of mainland China, with only Taiwan (including the Penghu islands), Kinmen, the Matsu Islands off the coast of Fujian Province, and some of the islands in the South China Sea remaining under its administration. Although previously