History of the Republic of China its remaining islands in Fujian as vital for any future campaign to defeat the PRC and retake mainland China. On 3 September 1954, the First Taiwan Strait Crisis began when the PLA started shelling Quemoy and threatened to take the Dachen Islands. On 20 January 1955, the PLA took nearby Yijiangshan Island, with the entire ROC garrison of 720 troops killed or wounded defending the island. On January 24 of the same year, the United States Congress passed the Formosa Resolution authorizing the President to defend the ROC's offshore islands. The First Taiwan Straits crisis ended in March 1955 when
Taiwan, China rules the Taiwan Area (composed of Taiwan and its nearby minor islands), became known as "Taiwan" after its largest island, (an instance of "pars pro toto"). It stopped active claim of mainland China as part of its territory after constitutional reform in 1991. However, since the 2008 election of Ma Ying-jeou, he again asserted that mainland China is part of Republic of China territory according to its constitution, and, in 2013, he stated that relations between PRC and ROC are not between countries but "regions of the same country". In 1971, the People's Republic of China won the United Nations