It is the maintenance of slavery by law in a state, not parallels of latitude, that makes its a southern state; and the absence of this, that makes it a northern state.
I speak on due consideration because Britain, France, and Mexico, have abolished slavery, and all other European states are preparing to abolish it as speedily as they can.
I submit, on the other hand, most respectfully, that the Constitution not merely does not affirm that principle, but, on the contrary, altogether excludes it.
But you answer, that the Constitution recognizes property in slaves. It would be sufficient, then, to reply, that this constitutional recognition must be void, because it is repugnant to the law of nature and of nations.
But assuming the same premises, to wit, that all men are equal by the law of nature and of nations, the right of property in slaves falls to the ground; for one who is equal to another cannot be the owner or property of that other.
Simultaneously with the establishment of the Constitution, Virginia ceded to the United States her domain, which then extended to the Mississippi, and was even claimed to extend to the Pacific Ocean.