Can someone tell me the answers please

The map makes it clear that after world war ii, korea was a a) part of china b) divided country c)part of japan d)unified country

Which of the following was used only once, to ratify the 21st amendment (repealing prohibition)? a. three-fourths of both houses of congress. b. three-fourths of the state legislature approved it. c. two-thirds of the state legislature approved it. d. ratifying conventions in three-fourths of the states approve it.

How were castas paintings used to stabilize a society?