The main explanation for the origins of the American Civil War is slavery, especially Southern anger at the attempts by Northern antislavery political forces to block the expansion of slavery into the western territories.
democratic
Republican
The political party that stood against the spread of slavery was the newly formed Republican party. The party was emerged to combat the Kansas-Nebraska Act of 1854 which aimed to extend slavery.
The Republicans
The Wilmot Proviso was designed to outlaw slavery in territories acquired from the War of Mexico. One of the effects was a political party that became dedicated to stopping the spread of slavery.
Preventing the expansion of slavery
The Republican Party was the political party that emerged in the 1850s with the primary goal of stopping the spread of slavery. Led by figures such as Abraham Lincoln, the party opposed the expansion of slavery into the new western territories and eventually played a crucial role in the abolition of slavery during the Civil War.
The expansion of slavery into the territory west of Missouri
Stephen A Douglas
Compromise Act of 1850
Free Soilers were individuals and political groups in the mid-19th century United States who opposed the expansion of slavery into new U.S. territories. They advocated for "free soil," meaning that slavery should be excluded from new territories and that these areas should be reserved for free labor. The Free Soil party, active from 1848 to 1854, was a political party dedicated to these principles.
The issue of expansion of slavery was its expansion and growth into Western territories.
Territorial expansion raised the question of whether new lands should be free or slave.
Free Soil Party, opposed the expansion of slavery
The question of whether to allow the expansion of slavery to the territories
the expansion of slavery ! @tjoness <---- follow that guy