Final answer:
The lack of power of Congress to raise an army under the Articles of Confederation made it difficult for the Confederacy to respond to threats.
Step-by-step explanation:
The lack of power of Congress to raise an army under the Articles of Confederation made it difficult for the Confederacy to respond to internal and external threats. While Congress had the authority to declare war and agree to peace, it had to rely on the states to provide soldiers. If state governors chose not to honor the national government's request for troops, the Confederacy would be left without an adequate defense.