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,
Politics of the Republic of China community has led to a "political apartheid" which "harms the human rights, interests, and dignity of Taiwan’s people.". Despite the differences between Taiwan and mainland China, contact between the two sides of the Taiwan Strait has grown significantly over the past decade. The ROC has continued to relax restrictions on unofficial contacts with the PRC, and cross-Strait interaction has mushroomed. Since 1987, when the ban on travel to mainland China was lifted, Taiwan residents have made more than 10 million trips to mainland China. The ROC Bureau of Foreign Trade estimates that indirect trade with mainland China reached about US$61.639