It was primarily the failure of the Articles of Confederation to deal with the issues arising between the states that led to the writing of the Constitution, since it was clear there needed to be a "stronger" central government.
Answer:
The Monroe Doctrine
Explanation:
James Monroe the president of the U.S. after the War of 1812 he knew the further colinization of North and South America was unacceptable and began the idea of the Monroe Doctrine which stated that the US should take action against European interference. The Monroe Doctrine Continues to be a central part of US foreign policy to this day.
powers not explicitly reserved for the federal government are given to the state's
Fearing the spread of communism by America
<span>"[The registrar] brought a big old book out there, and he gave me the sixteenth section of the constitution of Mississippi, . . . I could copy it like it was in the book, but after I got through copying it, he told me to give a reasonable interpretation and tell the meaning of the section I had copied. Well, I flunked out." Source: A History of the United States since 1861</span>
