How did slavery cause sectionalism in the antebellum era? southern politicians supported the expansion of slavery into new states. northern politicians backed the spreading of slavery only into far western territories. the south wanted slavery to continue in existing states but not in new states. the north wanted slavery to expand slavery into only a few northern states.

Correct Southern politicians supported the expansion of slavery into new states.

During the Antebellum Era (1820-1860) the United States enlarged quickly during the era of westward growth. The consequences were  the US gaining hundreds of thousands of square miles of land by acquisition , wars, and other agreements. When these territories desired to be states, the doubt of whether slavery would happen was all the time the most important  point. Northerners didn't want slavery to disseminate, as this would affect in slave states acquiring more strength in the Congress.

The correct answer is A) Southern politicians supported the expansion of slavery into new states.

Slavery caused sectionalism in the antebellum era in that Southern politicians supported the expansion of slavery into new states.

From the 1800s to 1861, just before the Civil War, the Antebellum period is known to the prosperity lived by the US Souther States due to the use of slaves to produce crops in the large southern plantations. The economy of the South heavily depended on slavery to produce the number of crops that had to be exported to Europe. During these years, confrontations between southern and northern states increased due to the topic of slavery and abolitionism.

answer; i believe that the correct answer is (scientific approach)

do all equestions have to be answered