The Ordinance of 1787 established that slavery should never exist in any part of that vast northwestern territory which had then lately been ceded by sundry States to the Confederation. This Ordinance could not be construed otherwise than as an integral part of the transaction of cession, and was forever unalterable, because it represented in a certain way a part of the consideration in a contract, and was also in the nature of a declaration of trust undertaken by the Congress of the Confederation with the granting States. The article "was agreed to without opposition;" but almost contemporaneously, in the sessions of that convention which framed the Constitution, debate waxed hot upon the topic which was then seen to present grave obstacles to union. It was true that many of the wisest Southerners of that generation regarded the institution as a menacing misfortune; they however could not ignore the fact that it was a "misfortune" of that peculiar kind which was endured with much complacency by those afflicted by it; and it was equally certain that the great body of slave-owners would resent any effort to relieve them of their burden. Hence there were placed in the Constitution provisions in behalf of slavery which involved an admission that the institution needed protection, and should receive it. The idea of protection implied the existence of hostility either of men or of circumstances, or of both. Thus by the Ordinance and the Constitution, taken together, there was already indirectly recognized an antagonism between the institutions, interests, and opinions of the South and those of the North.