(Credit: AP Photo/Lee Jin-man) President Donald Trump rattled South Korea last week when he said that “Korea actually used to be a part of China” in an interview. The incorrect statement of fact has now become an issue in South Korea’ presidential race, according to Bloomberg, and foreign diplomats are trying to clarify how and why Trump made that claim. Trump told the Wall Street Journal that Chinese President Xi Jinping provided that version of history, infuriating Seoul “It’s a clear fact acknowledged by the international community that, for thousands of years in history, Korea has never been part of China,” foreign ministry spokesman Cho June-hyuck said at a briefing in Seoul on Thursday, Bloomberg reported. Presidential candidates for South Korea’s May election have weighed in on Trump’s statement “This is clearly a distortion of history and an invasion of the Republic of Korea’s sovereignty,” conservative Liberty Korea Party candidate Hong Joon-pyo said through a spokesman. During a summit earlier this month with Xi, Trump said he was given a history lesson about China’s relationship with North Korea.