Use the map below to answer the following question:
This is a map showing the Korean Peninsula divided as it was after the end of World War II. The northern portion is shaded orange and is labeled North Korea. The southern portion is shaded blue and is labeled South Korea.
Which of the following reasons best explains the division of the Korean peninsula after WWII as shown?
A. The Chinese communist government had moved their troops to the 38th parallel in Korea during the war and taken control of the northern part of the country.
B. The defeat of Japan led to the division with a Soviet backed communist government in the north and a U.S. backed democratic government the south.
C. The South Koreans had fought on behalf of the Allies during WWII while the North Koreans had fought on behalf of the Axis powers.
D. The United Nations Charter of 1945 called for the division of the country into a democratic North and a communist South.