To support revising the Articles of Confederation was that the central government lacks power or lack of centralized government power.
The previous Article of Confederation allowed the states to hold most of the power, and the central government was too weak to even function properly. Due to this there was also huge difference in terms of economics from state to state.
Alabama, Vermont, New Hampshire, West Virginia, and Indiana are the five states entirely east of the Mississippi River.
The cons of it was that the Louisiana purchase pushed the Indians out of their home land
