What event spurred the creation of the Republican Party?

The Kansas-Nebraska Act of 1854 allowed settlers in those territories to decide whether slavery would be permitted, undermining the earlier limits on slavery’s expansion. Opposition to the act brought together people who formed the Republican Party. The Compromise of 1850 and Fugitive Slave Act heightened tensions over slavery, but the Kansas-Nebraska Act directly spurred the party’s creation.

AI-written and checked against the verified answer.