Correct answer: a declaration of war against Japan.
Explanation:
Japan attacked the US base at Pearl Harbor on December 7, 1941. On December 8, the United States declared war on Japan. Italy and Germany both declared war on the United States on December 11, to defend Japan, as they had signed the Tripartite Pact of mutual defense of one another. That same day, the United States then declared war against Germany and Italy.
Notes:
Roosevelt's Four Freedoms Speech had been given in an address to Congress already in January of 1941.
The termination of the Lend-Lease Act did not occur till September, 1945.
