I believe that the answer is C
Answer:
When America Fought in WWI and Became a Global Power. ... Swinging its industrial might and vast manpower behind France and Britain against Germany and its allies on April 6, 1917, the United States tipped the balance of the conflict and marked its own emergence as a global power.
The stalemate in Korea left us in a position of limbo. We couldn't advance, as it would further aggravate the high tensions between the us and the Chinese (and the USSR). We also couldn't leave as this would make South Korea vulnerable and they would be easily conquered. We had to stay if only to help keep a watchful eye and the peace.
a they are both appointed for life
