The Kansas Nebraska Act affected the border states because the Kansas Nebraska Act was set in motion a plan that was supposed to decide the Kansas question through a peaceful democratic process.
Hope this helps
I believe the answer is "change to meet the needs of a modern society".
The plan was aimed to <span>Place African Americans in a situation as close to slavery as possible.
The Black codes was enacted by the Democratic party in 1865. The main purpose of this codes is to restrict African American freedom during reconstruction era by only allowing them to work in jobs that provide low-level salary.</span>
"<span>C.Imperial states exert economic control over weaker states to exploit their natural resources." would be the best option from the list, since economic imperialism can occur without any physical invasion of a smaller country by a larger one.</span>