Answer :
In response to the attack on Pearl Harbor, President Franklin D. Roosevelt asked Congress to declare war on Japan. This was a crucial step taken to officially enter the United States into World War II. By requesting a declaration of war, Roosevelt sought the authority to engage in a military conflict with Japan in response to the unprovoked attack on American soil.
Declaring war on Japan was a significant decision that marked the U.S.'s entry into the global conflict of World War II. It allowed the country to mobilize its resources, military forces, and population to support the war effort and defend against further aggression. This declaration of war ultimately led to the United States becoming fully involved in the war on multiple fronts, including in the Pacific theater against Japan and in the European theater against Germany.
Overall, the request to declare war on Japan was a pivotal moment in American history that reshaped the country's foreign policy and solidified its commitment to fighting alongside its allies to secure victory in World War II.