Read this passage about the partition of Korea.

“The partition of Korea into two zones dominates the political and economic life of the peninsular. The division of Korea at the 38th parallel has turned into a hard and fast boundary which cuts off all intercourse between the northern and southern halves of the country, except for the exchange of mail and the transfer of surplus electric power from North to South Korea.”
–The Situation in Korea, 1947 Report

The passage says that the partition of Korea

divided the land but left the Korean economy running well.
encouraged communications between the two parts of the country.
divided the country, both in its political and economic life.
discouraged Communism from spreading into Korea from China.