The importance of Seoul as a city really started during the Joseon Dynasty. Former General Yi Seong-gye chose Seoul to be the capital of his empire in 1392. During the next 10 years Seoul grew into a real city, with 100.000 inhabitants. In that period Seoul was a city lead by the Neo-Confucianism philosophy of the Joseon Dynasty. Buddhism and Catholicism were banned into the mountains and the countryside. Till 1910 Seoul was controlled by this feudal system of kings, aristocrats, peasants, slaves and outcasts.