<span>Widespread fears about communism.
Read about McCarthyism for more details.</span>
The Monroe Doctrine demonstrates American Nationalism because the United States lays claims to all of the land in the American Continents that is not already conquered. President Monroe was a great advocate of nationalism and reached out to all the regions of the country. In foreign policy, he put the nation on an independent course, no longer tied to the mast of European policy.
Answer: The first man to ever rule the world would be god