One key reason the Constitution was adopted over the Articles of Confederation was that the Articles created a very weak central government that lacked essential powers such as the ability to tax, enforce laws, and regulate commerce between states. The Articles left most power to the individual states, making the federal government ineffective in addressing economic problems and internal conflicts. In contrast, the Constitution established a stronger federal government with executive, legislative, and judicial branches, the power to tax, and authority over interstate commerce, which addressed the limitations of the Articles and provided a more functional and unified national government.