These were main factors which were determined from this analysis. Modern Korea is divided into North and South Korea. The kingdoms of Korea, China and Japan were appearing to be differentiated based on the race. There was the period of conflict between these three kingdoms. These were known as Koguryo in north, Silla in southeast and Paekche in the southwest. Silla had defeated and unified rivals in Korean peninsula between 668 CE. Korea had reached boundaries during the Koryo Dynasty (918-1392). Based on this, the Choson dynasty was considered. They had consolidated national boundaries. Within the region of Korea, there were regional differences which were expressed between the dialect and the customs. These were differentiated based on customs and dialects. In general, regional differences were overweighed by the cultural homogeneity. In China, there was the rise of regional dialects from Korea. Korean language is observed to be distinct from China and they are structurally similar to the Japan culture. There are a lot of debate which exists between linguists about Korea and Japan. Many of customers, art forms and religious practices were different from China or Japan. Besides, the adaptation of the Neo-Confucianism and the philosophy of the ruling elite were derived from China. For many of centuries, Korea was considered to be a part of the Chinese “tribute system”. This entailed giving regular gifts to Chinese court and also acknowledging the fact that China was superior to the Korean king. However, these were symbolically dependent on China. They were dependent on China for the military protection and the political legitimization.
In practice, Korea was considered to be independent on the internal behavior. After the ambush of invasion by the Japanese towards the end of the 16th century and by the Manchus of Northeast Asia in 17th century, Korea was forced to have a policy which was based on the limited contact with other nations. This was a the main foreign contact which was sanctioned by the Choson Dynasty. Due to this, there was diplomatic missions for China for three or four times a year. In this time period, there was a small outpost of Japanese merchants in the southeastern part of Korea. In this time, there was a little population of Koreans who had left during the Choson Dynasty. Korea was considered to be the hermit kingdom for the west. They were later known for westerners at that time. The Japanese Colonial Period which was seen towards the latter half of the 19th century became the sole object for the competing imperial interests in China. These had caused countries to view for the open up of Korea for the trade and also the diplomatic relations. It basically took Japan to be recently opened towards the Western-style international relations. These were done to impose the diplomatic treaty for Korea for the first time since 1876. Basically, the surrendering of Japan created a newer realm for Korea which was split later on.