Final answer:
The Articles of Confederation granted the national government four main powers: foreign affairs, armed forces, trade regulation, and coinage of money.
Step-by-step explanation:
The Articles of Confederation, which served as the first constitution of the United States from 1781 to 1789, granted four main powers to the national government. These powers included the authority to conduct foreign affairs, maintain armed forces, regulate trade among the states and with other nations, and coin money. These powers were intended to address the weaknesses of the Articles of Confederation and establish a stronger central government.