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300 managing it, might, indeed, furnish material for discussion; but the main point, the decision of the question what should be the outcome of it, was before the country in the shape of an accomplished fact before the presidential campaign opened.

In February, 1848, the Treaty of Guadaloupe Hidalgo was concluded. By its terms Mexico recognized the Rio Grande as the western boundary of Texas, and ceded to the United States New Mexico and California, in consideration of which the United States were to pay to Mexico fifteen millions, and assume the payment of the claims of American citizens to a limited amount. Whatever their feelings about the origin of the war might have been, a large majority of the American people were well enough satisfied with the acquisition of New Mexico and California. The only question which seriously troubled them was whether, in the newly acquired territories, slavery should exist or not. That question loomed up in a portentous shape, and with regard to it neither party was at peace within itself. The main force of the Democratic party was in the South, and therefore leaned toward the interests of slavery; but, in order to win in presidential elections the Northern States necessary for party success, it had to make occasional concession to the anti-slavery spirit prevailing there. The main force of the Whig party was in the North, and therefore leaned toward general freedom; but, in order to secure the Southern States necessary for success, it had