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 which states that Taiwan and mainland China are both part of China, and that the PRC is the only legitimate government of China. It uses this policy to prevent the international recognition of the ROC as an independent sovereign state, meaning that Taiwan participates in international forums under the name "Chinese Taipei". With the emergence of the Taiwanese independence movement, the name "Taiwan" has been employed increasingly often on the island. Before 1928, the foreign policy of Republican China was complicated by a lack of internal unity—competing centres of power all claimed legitimacy. This situation changed after the defeat of