Which of the following statements best explains the motives behind
american military involvement in the korean war?
a. the united nations refused to authorize a multinational military response to the communist invasion of southern korea
b. the united states hoped to topple the chinese communist regime by drawing it into a prolonged war in korea
c. north korea communist refused to acknowledge the result of nationwide elections to select korean leaders after world war ii
d. american leaders worried that a communist victory in korea would lead to the spread of communism throughout asia