The expansion was the result of a strong desire of Manifest Destiny amongst most Americans. Manifest was a belief that the United States was destined to expand across the Atlantic Ocean to the Pacific Ocean. Westward <span>expansion had many effects on America. </span>
C. nations compete to build the most weapons.
Credibility is the answer.
The Mongol Dynasty, I believe. They were the dynasty that defeated Kublai Khan.
