What is happening in Korea in 30BCE
With the union of China under the Han, Chinese cultural influences have greatly increased in Korea, stimulating trade, especially in new luxury products. This was especially true after 108 BCE, when Han armies occupied the northern part of Korea and founded four provinces there. Within these provinces, the upper classes rapidly adopted all the accoutrements of Chinese civilization. Beyond the borders of the Han empire, the old tribal confederacies begin to make way to more centrally organized kingdoms.