An example of shifting boundaries influencing surrounding countries comes from the Tang dynasty. The Tang dynasty ruled from 618-907 and during this time they were very prosperous.
The Tang dynasty, with its vast and powerful armies , conquered Tibet, Vietnam and Korea. These new conquered lands were tributary states meaning that they had to observe that the Chinese were superior. That changed the cultures of the captured states because they were influenced by China culture. The tributary states also had to pay taxes to their Chinese overlords. Although, politically, the borders of the Song empire were smaller in size then the Tang empire the Song empire had a strong cultural effect on East Asia. This is an instance during chinese history
The Tang dynasty, with its vast and powerful armies , conquered Tibet, Vietnam and Korea. These new conquered lands were tributary states meaning that they had to observe that the Chinese were superior. That changed the cultures of the captured states because they were influenced by China culture. The tributary states also had to pay taxes to their Chinese overlords. Although, politically, the borders of the Song empire were smaller in size then the Tang empire the Song empire had a strong cultural effect on East Asia. This is an instance during chinese history