At the Constitutional Convention, delegates from northern and southern
states disagreed about:

whether the federal government should have the power to regulate slavery.

Explanation:

The northern states did not want that enslaved should be count at all but the southern slaveholding states want the opposite from them. the three-fifth settlement formed between them that enslaved men and women represent in the house at the ratio of 3 to 5 out of their real number. it means every five persons would count as three only for the process of both taxation and representation.

answer; the above statement is (false);

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;