Answer:
Constitutional Provisions
Constitution of the United States, Article I, Section 8: Gives Congress the power to declare war and raise and support the armed forces.
The classical republicans concerned themselves far more intensely with the proper forms and duties of government, and they were always critical of both monarchs and other government actors who overstepped their prerogatives.
Answer:
The Kansas-Nebraska Act allowed each territory to decide the issue of slavery on the basis of popular sovereignty. Kansas with slavery would violate the Missouri Compromise, which had kept the Union from falling apart for the last thirty-four years. .The Missouri Compromise had prevented this from happening since 1820.
https://en.wikipedia.org/wiki/Trans-Mississippi_Theater_of_the_American_Civil_War