Question

What led directly to the formation of the Republican Party?


passage of the Kansas-Nebraska Act

the outcome of the Mexican-American War

Stephen Douglas’s failed run for US Senate

Answer 1

The Republican Party emerged in 1854 to combat the Kansas–Nebraska Act and the expansion of slavery into American territories. The early Republican Party consisted of northern Protestants, factory workers, professionals, businessmen, prosperous farmers, and after 1866, former black slaves.
Info found on
https://www.google.com/url?q=https://en.wikipedia.org/wiki/History_of_the_Republican_Party_(United_States)&sa=U&ved=2ahUKEwi_xKzmi8vuAhVwB50JHY0rAcIQFnoECAYQAg&usg=AOvVaw0aNanF08S4wU79vSisrx2O
so the answer would be B