After lincoln’s presidential inauguration, southern states began seceding for all of the following reasons except:

a.
they disagreed with the 36º31’ parallel line of slavery
b.
they felt he constitution had been violated when the federal government refused to enforce the fugitive slave act.
c.
they believed that states were not given equal rights to make decisions over slavery
d.
they believed that they had entered the union voluntarily and could leave

C) they believed that states were not given equal rights to make decisions over slavery

Explanation:

The southern states always saw lincoln as a public enemy, the image they had of him, was basically of an abolitionist. One of the aspects that Lincoln supported was the end and abolition of Slavery in order to maintain the Union, however, this was definitely against the Southern state's interests, since their empires, production and wealth, depended considerably on the slavery, and the no remuneration of the labor.

So besides the economical harm of the southern state's business, they felt that slavery was intended to end arbitrarily, without counseling, or basically without giving independent power to each state to influence or take sides in these kinds of decisions.

norsemen from northern countries had made earlier journeys