When Jefferson succeeded in negotiating the cession of that vast and rich domain to the United States, it is not to be supposed that either the allurements of territorial aggrandizement on the one hand, or the impending danger to the continued ascendency of the political party which had elevated him to the Presidency, threatening it from all the irritations with republican France likely to grow out of such near proximity to her Colony, on the other, could have blinded his eyes to the fact that its acquisition must inevitably tend to the spread of that very evil, the contemplation of which, at a later day, wrung from his lips the prophetic words, "I tremble for my Country when I reflect that God is just." It is more reasonable to suppose that, as he believed the ascendency of the Republican party of that day essential to the perpetuity of the Republic itself, and revolted against being driven into an armed alliance with Monarchical England against what he termed "our natural friend," Republican France, he reached the conclusion that the preservation of his Republican principles was of more immediate moment than the question of the perpetuation and increase of human Slavery. Be that as it may, it none the less remains a curious fact that it was to Jefferson, the far-seeing statesman and hater of African Slavery and the author of the Ordinance of 1784--which sought to exclude Slavery from all the Territories of the United States south of, as well as north-west of the Ohio River--that we also owe the acquisition of the vast territory of the Mississippi Valley burdened with Slavery in such shape that only a War, which nearly wrecked our Republic, could get rid of! Out of that vast and fertile, but Slave-ridden old French Colony of "Louisiana" were developed in due time the rich and flourishing Slave States of Louisiana, Missouri and Arkansas.