How did passing laws banning slavery in the northern states lead to a more divided nation?

a) Slavery was now outlawed across the nation creating a deeper division.

b) Northern farmers were concerned about the economic impact of outlawing slave labor.

c) It increased demand for indentured servants in New England.

d) Plantation owners argued that their plantations would fail without slavery.

d) Plantation owners argued that their plantations would fail without slavery.