The North and the South were economically dependent on each other because of what?

The North and the South were economically dependent on each other because of ( oil, steel, cotton ). Despite this dependence, the South was threatened by the North because of its support of ( education, religious, antislavery ) and ( industrial, tariff, income tax ) policies.

the north and the south economically dependent on each others because of on each other because of ( oil, steel, cotton ). Despite this dependence, the South was threatened by the North because of its support of ( education, religious, antislavery ) and ( industrial, tariff, income tax