Dude, there's no question
Manifest destiny
Was a widely held belief in the United States that its settlers were destined to expand across North America. Championed by president Polk, the USA based the manifest destiny on three themes, such as special virtues,and the essential duty of the American people to redeem the west given by God.
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Answer:
The answer is c:the feelings of Nationalism in Europe were on the decline
Answer: Average Kinetic Energy
Credibility is the answer.