The name Korea comes from the word Koryo . The Koryo Dynasty lasted until 1392. The rulers of the Koryo Dynasty continued to adopt Chinese ideas but they worked to maintain distinct Korean features. During the Koryo period Korean culture thrived Korean artisans created pottery covered with blue and green glaze called celadon.In 1200's the Mongols of the Yuan China invaded and occupied Korea. they forced Koryo's rulers to pay large tributes and enslaved many Koreans. but in 1392 a korean general formed a new dynasty which ruled until 1910.