Question

why South Korea and North Korea split into two countries​

Answer 1

Answer:

The United States supported the South, the Soviet Union supported the North, and each government claimed sovereignty over the whole Korean peninsula. In 1950, after years of mutual hostilities, North Korea invaded South Korea in an attempt to re-unify the peninsula under its communist rule.

Answer 2

Answer:

The United States supported the South, the Soviet Union supported the North, and each government claimed sovereignty over the whole Korean peninsula. In 1950, after years of mutual hostilities, North Korea invaded South Korea in an attempt to re-unify the peninsula under its communist rule.