The discovery of gold in amazingly rich deposits in California hastened the conflict of the rival sections. During the second half of 1848 and all through 1849 thousands of Southerners, Easterners, and Westerners rushed pell-mell into the new Eldorado, bent on making hasty fortunes and oblivious of the anxious thoughts of statesmen. The motley gold-diggers needed government. They asked Polk to provide it. He failed to grant it. Congress could not do so because of the deadlock over slavery. Benton wrote a public letter to the Californians advising them to form a government for themselves, and his son-in-law, John C. Fremont, went to the new community to help the cause and perhaps to come back to Washington as one of their Senators. In 1849, the Californians formed a State Government, and the new legislature sent their constitution and two Senators, one of whom was Fremont, on to Washington early the next year. Admission as a full-fledged State was asked. They had failed to mention slavery in their constitution. President Taylor had at last decided to admit to his counsels the anti-slavery leaders of the Whig party, and he filled his Cabinet with men who would support him as against Clay and Webster. William H. Seward became the confidential adviser to the President and a sort of Administration leader of the Senate. Southern Whigs like Stephens, who had done much to secure for Taylor the Presidency, were without influence, and they feared that all the anti-slavery elements of the North were combining to control the Government. While California was shaping her own course and the President was making his decision as between the factions of his party, South Carolina and Mississippi took the lead in a movement to prevent that or any other State or Territory from being brought into the Union if slavery were not duly recognized. Whigs and Democrats joined in great mass meetings, which showed conclusively that the lower South was in earnest. All classes of the people united in what seemed to be almost the unanimous wish of the South, that the new Southwest should be preserved for the expansion of slavery. These meetings spread over all the lower Southern States, and as a result, a convention was called to meet in Nashville in June, 1850. The object of this general convention was to present to Congress a Southern ultimatum, and in the event that this should not be heeded, to urge the secession of the slaveholding States.