South Korea has formally requested that a U.N. agency remove historical sites related to Japan's industrial revolution from its World Heritage site list, the country's Foreign Ministry said Tuesday.The ministry said the request was made in a letter sent Monday to UNESCO Director General Audrey Azoulay in the name of South Korean Foreign Minister Kang Kyung Wha.The Hashima Coal Mine in Nagasaki Prefecture, known as "Battleship Island" because of its shape, is one of the 23 sites spanning eight prefectures that were inscribed on the World Cultural Heritage list in 2015 under "Sites of Japan's…READ FULL ARTICLE