Answer:
A. it led to a violent struggle over slavery in Kansas.
Explanation:
The Kansas-Nebraska Act was a splendid failure.
Because it split up the Kansas and Nebraska territories and opened them up to popular sovereignty, meaning the inhabitants could choose to be slave or free state, people started pouring in to artificially raise the numbers in support of their political party and get a swing in Congress.
"Bleeding Kansas" followed soon after, with murders and violence at a high.
Neither was war inevitable in 1812. it almost came in 1794, 1807 and 1808, and it could have been avoided again through diplomacy as in these earlier crises. It was a recipe for military disaster as the US Army performed throughout 1812 and 1813.
1: Only states that ratified it had to obey it
2: Articles of Confederation (possibly, cant remember completely, been a while)
Paine was seeking to stir up revolutionary spirit in the colonies, Continues, "The summer soldier and the sunshine patriot may, in this crisis, shink from the services of his country; but he that stands it now deserves the love and thanks of man and woman"