The correct option is B Control of business and government by the well-born gave way to a society based on the economic success of "self-made" men.
The change in U.S. society in the period between 1820 and 1844 is best explained by control of business and government by the well-born way to a society based on the economic success of "self-made" men. The Age of Jackson was notable for the impact of the industrial revolution, westward expansion, lowered suffrage restrictions, and political appeals to the "common man".