Select the correct answer from each drop-down menu. Complete the following sentences about the antebellum period.

The Southern states feared that ( the federal governments policies favored the North over the South; they were left defenseless during the Mexican-American war; or the North would impose severe taxes on slaves)
As a result many southerners started thinking about ( declaring a war on the north; banning all trade with the North; or separating from the United States)