Question

a result of the kansas - nebraska act of 1854 was
the formation of the republican party.
the implementation of the fugitive slave act.
the elimination of popular sovereignty.
the enforcement of the missouri compromise

Explanation:

The Kansas - Nebraska Act of 1854 repealed the Missouri Compromise. It allowed settlers in the Kansas and Nebraska territories to decide on the issue of slavery through popular sovereignty. This led to violent conflicts (Bleeding Kansas). Opponents of the act, including those against the expansion of slavery, came together to form the Republican Party in 1854. The Fugitive Slave Act was part of the Compromise of 1850. The Kansas - Nebraska Act actually used popular sovereignty (not eliminated it) and repealed (not enforced) the Missouri Compromise.

Answer:

the formation of the Republican Party.