So natural and just was the step of secession that the more enlightened and conscientious Abolitionists conceded the right of South Carolina to withdraw from the Union. Horace Greeley, the powerful editor of the great Abolition organ, the New York _Tribune_, boldly protested against any interference with her departure. Wendell Phillips, the great lawyer and Abolition orator of Boston, said in a public speech: "Deck her brow with flowers, pave her way with gold, and let her go." But Greeley and Phillips were not the politicians nor the party in control of the country. We have shown how the Free Soil aim of the triumphant party led the Northern States to adopt such a course as really to drive the Southern States into secession. What was the main spring of the Free Soil crusade? This brings us to tell in one word what brought on the war. What was the ground issue which held the Northern States so desperately on their crusade against the South? It was the "tariff." New England ideas dominated the thought of the North and Northwest, and it was always a ruling New England idea to get all money possible from the government. New England never lost sight of business, and especially her own business interests. It was only by Virginia's surrender of her vast territories that New England could be brought into the Union and it took subsidies, appropriations for internal improvement, and fishing and tariff bounties to keep her in it. Very soon she set up a persistent demand for high duties on imports to assist in building up her increasing manufactures. The moderate protective tariffs of the twenties, the tariff of Henry Clay, did not satisfy her. Her cry up to the final passage of the trust-breeding Dingley tariff bill of our day has been that of the horse leech, "Give! give!" The Southern States were agricultural and the prevailing doctrine as to tariff duties was a "tariff for revenue only." The old Southern Whigs, like Clay, only favored a moderate protective tariff as a compromise sop to New England in behalf of her infant industries. But New England was not satisfied with the tariff of the twenties. A little taste of incidental protection had only increased her greed. In the thirties she demanded more. The tariff of 1832 was enacted and proved such a heavy tax on the consumers for the benefit of the manufacturers that South Carolina took the bold stand of nullification against it. By the combined efforts of Clay and Calhoun a compromise was effected and the tariff modified and the country saved. In 1846 the moderate Walker tariff, the "free-trade tariff," was adopted and under it the people of all classes and all sections enjoyed more general prosperity up to 1861 than the country has ever before or since seen.