How did general MacArthur contribute to UN success in the Korean War?

After North Korea invaded South Korea on June 25, 1950, MacArthur was appointed supreme commander of the U.S.-led U.N. force sent to aid the South. In September, he organized a risky but highly successful landing at Inchon, and by October North Korean forces had been driven back across the 38th parallel.

Explanation:

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b