After the War of 1812 and during the presidency of James Monroe, the United States enjoyed an "Era of Good Feelings." Winning a war had gained respect for the United States. Industry was growing. A feeling of patriotism developed, and the people were drawn together in a common destiny. This period of harmony ended as the North, South, and West began to develop their own special interests.
Several of these figures were anti-capitalist, as well as anti-religion. They were also revolutionaries, not advocates of a rigid social system so the correct answer is (4) achieving change through revolution.