BEIJING, Sept. 18 (Xinhua) -- A Chinese mainland spokesperson on Thursday reiterated Taiwan's status as an inalienable part of China's territory, responding to recent remarks from the American Institute in Taiwan (AIT). Taiwan's return to China was an important component of the outcomes of victory in World War II and the post-war international order, Chen said. Chen urged the United States to adhere to the one-China principle and the three China-U.S. joint communiques. He also criticized Taiwan's Democratic Progressive Party authorities for manipulating specific media outlets to stage "a coordinated performance" with certain U.S. institutions in advocating the fallacy that "Taiwan's status is undetermined." "Historical facts cannot be altered, and Taiwan's status as a part of China is indisputable," Chen stated, stressing that national reunification is an inevitable historical trend.