Which of the following statements best describes the state of the korean peninsula after world war ii? a. south korea became communist; north korea became democratic. b. south korea became democratic; north korea became communist. c. both south korea and north korea became democratic. d. both south korea and north korea became communist.

Of the statements, the best in describing the state of the Korean Peninsula after World War II is B: South Korea became democratic; North Korean became communist. Following World War II, Soviet forces supported the communist regime under Kim il-Sung in the northern half of the peninsula who waged war on the southern half. UN intervention pushed the communist forces back to the Chinese border at which point the Chinese military intervened to push the UN back to the current line dividing North Korea (communist) and South Korea (democratic).