B

The Kansas-Nebraska Act was a piece of legislation passed by the United States Congress in 1854. It was designed to address the issue of slavery in the territories of Kansas and Nebraska, which were being opened up for settlement. The act repealed the Missouri Compromise of 1820, which had prohibited slavery in the territories north of the 36°30' parallel.

The Kansas-Nebraska Act allowed the settlers in these territories to decide for themselves whether they wanted to allow slavery or not, a concept known as popular sovereignty. This effectively opened up the possibility of slavery spreading into new territories, and it led to a rush of pro-slavery and anti-slavery settlers into Kansas, sparking a violent and bloody conflict known as "Bleeding Kansas."

The passage of the Kansas-Nebraska Act had far-reaching consequences. It intensified the debate over slavery and further polarized the North and South. It also led to the collapse of the Whig Party and the rise of the Republican Party, which was founded on an anti-slavery platform. The act also contributed to the growing tensions that eventually led to the American Civil War.

In conclusion, the Kansas-Nebraska Act was a significant piece of legislation that had a profound impact on the United States. It not only led to violence and bloodshed in Kansas but also deepened the divide between the North and South, ultimately contributing to the outbreak of the Civil War.

C

C