Final answer:
The intended audience of President Franklin D. Roosevelt's "Day of Infamy" speech was both the US Congress and the nation, intended to rally support for a declaration of war against Japan after Pearl Harbor.
Step-by-step explanation:
The intended audience for President Franklin D. Roosevelt's "Day of Infamy" speech was the US Congress and the nation. In this historic speech, Roosevelt sought a declaration of war against Japan following the attack on Pearl Harbor, marking the United States' entry into World War II.
The intended audience of President Franklin D. Roosevelt's "Day of Infamy" speech was both the US Congress and the nation, intended to rally support for a declaration of war against Japan after Pearl Harbor.
The speech was crafted to underscore the heinous nature of the surprise attack, invoking a sense of unity and just cause for the nation's move towards war. Roosevelt's words were deliberate, designed to rally support from Congress and the American public, utilizing rhetorical strategies that conveyed the attack as not only a military assault but an affront to the values and principles of the United States.