Japan

An island nation located in Northeast Asia. History begins with what is known as Yamato Japan, thought to be established by the colonists from Southeastern Korea, after they crossed the seas to Japanese islands around 4th century. Stayed in constant internal wars and in isolation from Korea and Japan after the early Yamato period, establishing eventually its distinct system of bakahu and samurais. There was not much interactions outside the island, except the two invasions from the Mongols and Koreans in 12th century and the Seven Years War against Korea in 15th century. Modernized and rose as a "Great Power" in the 19th century, invading China and Korea. It was completely destroyed however by WWII, but recovered as a result of the Korean War of 1950s and now stands as one of the world's major economic powers.