The chief strength of slavery in this crisis lay in the distressing practical difficulty, if the prayer of Missouri were refused, of dealing with slaves and slave proprietorship there, and of quieting a numerous and spirited population bent upon statehood and slavery together. The more decided foes of slavery did not sufficiently consider these complications. Nor did they duly reflect upon the sweeping triumph which freedom had withal secured in the pledge that the vast bulk of the Louisiana purchase should be forever free. The pledge was indeed broken in 1854, but not until such a sense of its sacredness had been impressed upon the country that the breach availed slavery nothing. CHAPTER IV. THE GREAT NULLIFICATION [1816-1828] The tariff rates of 1816 on cottons and woollens were to be twenty-five per cent. for three years, after that twenty. Instead of this the cotton tariff was in 1824 replaced at twenty-five per cent., the same as that upon woollens costing thirty-three and a third cents or less per square yard; woollens over this price bearing thirty per cent. Wool, which by the tariff of 1816 was free, now bore, some grades fifteen, some twenty, some thirty per cent. Iron duties were put up in 1818 and again in 1824, from which date for ten years they ranged between forty and one hundred per cent. The whole tendency of tariff rates was strongly upward. The duty upon all dutiables averaged between 1816 and 1824 only twenty-four and a half per cent; from 1824 to 1828 the average was thirty-two and a half per cent. Importation remained copious, notwithstanding, which made the cry for protection louder than ever. [1828] From Quincy Adams's presidency the tariff question becomes on the one hand political, dividing Whigs from Democrats about exactly, which had never been the case before, and on the other, sectional, the West, the Centre, and now also the East, pitted against the solid South, except Louisiana. The year 1824 heard Webster's last speech for free trade and saw Calhoun's and Jackson's last vote for protection. However, so strong was the protectionist sentiment in the XXth Congress, though democratic, that free-traders could hope to defeat the new tariff bill of 1828 only by rendering it odious to New England. They therefore conspired to make prohibitive its rates for Smyrna wool, and nearly so those on iron, hemp, and cordage for ship-building; also on molasses, the raw material for rum, whereon no drawback was longer to be allowed if it was exported. [Illustration: Portrait.] John Quincy Adams. From a picture by Gilbert Stuart. The Whigs had arranged, to be now passed, a series of minimum rates on woollens, by which all costing over fifty cents a square yard were to pay as if costing $2.50, and all over this as if costing $4.00. The rate was to be forty per cent. the first year, forty-five the second, and fifty thereafter.