Between 1845 and 1860, critical events and issues seemed to come in a rush, giving Americans little time to analyze what was happening and to reflect on long-range solutions. Emotion seemed to replace reason as the debate grew increasingly repetitious and loud. The question, or so it seemed, was the expansion of slavery into the territories gained during the Polk administration. But something far more fundamental was at stake⎯the future of the nation. Northerners had become convinced that the expansion of slavery threatened the democratic foundations of the United Sates and that expansion would give the South control of the government, which would lead to economic stagnation, unemployment, and financial ruin⎯all the effect of the depression of 1837 but magnified. From their point of view, the South, and its peculiar institution, threatened the nation's growth and progress and had to be overcome. The South, however, convinced of the legality of its position and the validity of its institutions, fought back and with remarkable success. By combining its power in the Democratic party (which gave it extraordinary influence in Congress and with the president) with its supporters on the Supreme Court, the slave states seemed secure. But still, they were fearful. Convinced that they had given up all they could in earlier compromises, they feared future gains by those they considered to be enemies, and those they feared most were the Republicans.