Final answer:
States in Japan, Korea, and Vietnam shared feudal social structures between 600 CE and 1450, characterized by a hierarchy with a ruling class and peasantry.
Step-by-step explanation:
Commonalities of States in Japan, Korea, and Vietnam from 600 CE to 1450
Between 600 CE and 1450, the states in Japan, Korea, and Vietnam shared feudal social structures as a common characteristic. In Japan, during the Edo period, the Tokugawa shogunate established a rigid societal hierarchy with the emperor, court nobles, and shoguns at the top, followed by the samurai, and below them were peasants, artisans, and merchants. Korea and Vietnam exhibited similar feudal structures with a ruling class, land-holding aristocrats, and a peasantry that worked the land.
The geographical constraints and the influence of neighboring cultures through trade and cultural exchange played a significant role in forming the social and political landscape of these states. Despite internal organization under feudalism, all three regions also interacted with the wider world, incorporating aspects of Chinese civilization and adapting them into their unique societal frameworks.
As a consequence of interacting with significant neighbors like China, these states developed robust cultures with monumental architecture and art. Thus, while they had several differences owing to distinct religious and philosophical traditions, the social and political structures of Japan, Korea, and Vietnam during this period demonstrate notable similarities based on feudal frameworks.