Answer:
The answer is c
Explanation:
because it is in the name
Conflict in the Middle East disrupted energy markets, causing high oil and gas prices in the United States. D. Conflict in the Middle East disrupted oil exports from the region, leading to a boom in U.S. oil production
The Rocky mountains provided the greatest obstacle to railroad expansion
"C. was overthrown by invading Mongol tribes in A.D. 1279" would be the best phrase describing China's Song Dynasty, but this was of course not always the case.
