How did bleeding Kansas cause tension between the North and the South?

Those from the North generally opposed slavery in Kansas. Election fraud, intimidation, and some violence resulted, when the two sides began to contest the territory. The turmoil in Kansas contributed to the growing tension between the North and the South, which eventually led to the outbreak of the Civil War.

Explanation:

answer: 25.8 years old or 25 years old

which time period is this? or is this story fictional, i'm going to need more info to answer this question