Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) The 10-minute conversation between US President-elect Donald Trump and Taiwan President Tsai Ing-wen was a major break in the accepted protocol -- something that evidently does not much bother Mr. Trump. It is, of course, too soon to guess whether it was a fluke or a portent of a sea change in American policy. When the Communists won power on the mainland in 1949 their defeated Nationalist foes retreated to the island of Taiwan, either to go down in a last stand or to "recover the mainland." The Communists, for their part, determined to "liberate Taiwan." Both sides considered the standoff to be part of a continued civil war. Both claimed legitimate rule over all of China, with Taiwan merely a province of China. The one thing both agreed on was that Taiwan was inextricably part of China, and was not and could not be an independent country.Donald Trump's phone call with Taiwan was a major break in protocol, writes Peter MoodyMoody: It is too soon to say whether it means a sea change in US policy 
 Question:Danger of communist subversion served to rationalize the dictatorship, although in practice the repression was directed at least as much against agitation for _ independence.

Taiwan