Key Points 1. Why has human
movement between
China and Korea
been relatively easy
throughout history?

The movement of people between China and Korea has been relatively easy since the times of history because the two countries have diplomatic ties. Since 1992, China stands out as South Korea’s topmost trading partner. On the same note, the ethnic groups in the northern part of Korea, where it borders China, are similar, making it easy for the two countries to socialize freely with one another due to the shared blood. The aspect of China being Korea’s leading trading partner and social commonness that exists since the ancient days makes human movement between the two countries relatively easy.

No we should just pass

The theory is land mass basically what they said.