The second great compromise between northern and southern interests related to the abolition of the foreign slave-trade and the power of the federal government over commerce. All the states except South Carolina and Georgia wished to stop the importation of slaves; but the physical conditions of rice and indigo culture exhausted the negroes so fast that these two states felt that their industries would be dried up at the very source if the importation of fresh negroes were to be stopped. Cotesworth Pinckney accordingly declared that South Carolina would consider a vote to abolish the slave-trade as simply a polite way of telling her that she was not wanted in the Union. On the other hand, the three New England states present in the convention had made up their minds that it would not do to allow the several states any longer to regulate commerce each according to its own whim. It was of vital importance that this power should be taken from the states and lodged in Congress; otherwise, the Union would soon be rent in pieces by commercial disputes. The policy of New York had thoroughly impressed this lesson upon all the neighbouring states. But none of the southern states were in favour of granting this power unreservedly to Congress. If a navigation act could be passed by a simple majority in Congress, it was feared that the New Englanders would get all the carrying trade into their own hands, and then charge ruinous freights for carrying rice, indigo, and tobacco to the north and to Europe. On this point, accordingly, the southern delegates acted as a unit in insisting that Congress should not be empowered to pass navigation acts, except by a two thirds vote of both houses. This would have tied the hands of the federal government most unfortunately; and the New Englanders, enlightened by their own interests, saw it to be so. Here were the materials ready for a compromise, or, as the stout abolitionist, Gouverneur Morris, truly called it, a "bargain" between New England and the far south. New Hampshire, Massachusetts, and Connecticut consented to the prolonging of the foreign slave-trade for twenty years, or until 1808; and in return South Carolina and Georgia consented to the clause empowering Congress to pass navigation acts and otherwise regulate commerce by a simple majority of votes. At the same time, as a concession to rice and indigo, the New Englanders agreed that Congress should be forever prohibited from taxing exports; and thus one remnant of mediæval political economy was neatly swept away. [Sidenote: This last compromise seems to make the adhesion of Virginia doubtful.]