Final answer:
After the attack on Pearl Harbor, the US military took control of the base and used it as a strategic naval base throughout World War II.
Step-by-step explanation:
History of Pearl Harbor
On December 7, 1941, Japanese armed forces attacked the US naval base at Pearl Harbor in Hawaii, prompting the US to enter World War II. However, your question seems to be referring to a different aspect of Pearl Harbor. If you are asking about permission to use Pearl Harbor after the attack, the US military took control of the base and used it as a strategic naval base throughout the war.
Japanese Invasion Plans
The Japanese military aimed to cripple the US fleet to prevent interference in their expansion plans in Asia. They hoped to take control of the US naval base at Pearl Harbor and launch further attacks on the US mainland. However, their plans were thwarted by the US military's response and the subsequent declaration of war.