What Anger over the kansas - nebraska act resulted in a new coalition that became the?

The anger over the Kansas-Nebraska Act, which allowed for the expansion of slavery into new territories, led to the formation of a new political coalition that became the Republican Party. This coalition included former Whigs, Free Soilers, and anti-slavery Democrats who opposed the act's provisions. Their shared opposition to the spread of slavery galvanized efforts to create a unified front against the pro-slavery interests. The Republican Party emerged as a significant political force in the 1850s, advocating for free soil and the containment of slavery.