Note (return) — Chapter I

It is well known that, at the time of the adoption of the Federal Constitution, African servitude existed in all the States that were parties to that compact, unless with the single exception of Massachusetts, in which it had, perhaps, very recently ceased to exist. The slaves, however, were numerous in the Southern, and very few in the Northern, States. This diversity was occasioned by differences of climate, soil, and industrial interests—not in any degree by moral considerations, which at that period were not recognized, as an element in the question. It was simply because negro labor was more profitable in the South than in the North that the importation of negro slaves had been, and continued to be, chiefly directed to the Southern ports.1 For the same reason slavery was abolished by the States of the Northern section (though it existed in several of them for more than fifty years after the adoption of the Constitution), while the importation of slaves into the South continued to be carried on by Northern merchants and Northern ships, without interference in the traffic from any quarter, until it was prohibited by the spontaneous action of the Southern States themselves.