Final answer:
Under the Articles of Confederation, the federal government could sign treaties and wage war, but it could not collect taxes or regulate interstate commerce.
Step-by-step explanation:
Under the Articles of Confederation, the federal or national government was allowed to sign treaties and wage war. This means that the government had the authority to make agreements with foreign countries and to engage in military actions. However, the government was not allowed to collect taxes or regulate interstate commerce.
Learn more about Articles of Confederation