Koreans are a relatively new civilization on planet Earth. They make an appearance in the 1430s AD, which was the last century of the Middle Ages before the Modern Ages began. The Korean state was founded by Sejong the Great. For nearly 500 years the Koreans enjoyed a relatively stable society and the borders of their empire never changed with the exception of North and South Korea in contemporary times (which are called the Modern and Genetic ages in the game's epochs). In the contemporary times the nation is divided into two parts: one part ruled by Koreans (North Korea), the other half of the country ruled by the American civilization. The Americans entered into Korean lands some time after the year 1945 when the Japanese civilization was driven out of the country.