Answer:
The Civil War seperated the country by the north and south. Some southern states even succeeded and formes the confederate states of america. The country was fighting against itself at this time and causes a division between north and south.
Answer:lack of communication because of distances between properties.
Lack of communication between settlements because of nationalities and non speaking English americans
Explanation:
The doctrine of popular sovereignty was used. That meant that people in those states could choose to vote to support slavery and since they were majority then slavery would be permitted. There were even states that were at first non-slave states but then things changed and they voted to introduce slavery into the state and people voted for this and supported this.