Answer:
Sectionalism: Concern for one's region over concern for the entire nation.
Popular Sovereignty: the idea that people should be able to vote on important issues
States' Rights: the idea that states should hold the most political power
Nullify: to invalidate something or make it null and void.
Explanation:
It was fought May 12 and 13 lake 1865, on the banks of the rio grande east of brown ills
The United States. During the Korean War, the United States was a major ally and had a major role in the war. Yes there were other allies, but the Untied States was the biggest. To this day, the United States is still in South Korea and still the largest ally that they have.