Here history about Taiwan, The ROC was founded in 1912 in China. At that time, Taiwan was under Japanese colonial rule as a result of the 1895 Treaty of Shimonoseki, by which the Qing ceded Taiwan to Japan. The ROC government began exercising jurisdiction over Taiwan in 1945 after Japan surrendered at the end of World War II. The Mutual Defense Treaty between the United States and the Republic of China (formally known as Mutual Defense Treaty between the United States of America and the Republic of China), was a defense pact signed between the United States and the Republic of China (Taiwan) effective from 1955 to 1980. If you look at history, yes Chinese civilian evacuate to Taiwan at that time, but Taiwan Island has never been Rule the land by China before, if China do anything stupid then U.S can Declaration of Independence for Taiwan anytime
