Final answer:
Under the Articles of Confederation, Congress did not have the power to regulate interstate trade. This was a significant limitation that hindered the federal government's ability to manage economic issues and inter-state disputes.
Step-by-step explanation:
The power not granted to the Congress under the Articles of Confederation was e. the power to regulate interstate trade. While the Congress had powers such as the power to declare war, the power to conduct foreign affairs, the power to coin money, and the responsibility to create land ordinances, it did not have the authority to impose taxes or regulate commerce between the states.
This was one of the significant weaknesses of the Articles of Confederation, as it limited the ability of the national government to address economic issues and disputes between states.