when did the united states enter world war ii in europe
Military history of the United States during World War II On 11 December 1941, Adolf Hitler and Nazi Germany declared war against the United States, the same day that the United States declared war on Germany and Italy.[19]
History of the United States The American Revolutionary War began at Concord and Lexington in April 1775 when the British tried to seize ammunition supplies and arrest the Patriot leaders.
History of United States foreign policy The same pattern which emerged with the first world war continued with the second: warring European powers, blockades, official U.S. neutrality but this time President Roosevelt tried to avoid all of Wilson's mistakes. American policy substantially favored Britain and its allies, and the U.S. getting caught up in the war. Unlike the loans in World War I, the United States made large-scale grants of military and economic aid to the Allies through Lend-Lease. Industries greatly expanded to produce war materials. The United States officially entered World War II against Germany, Japan, and Italy in December 1941, following the Japanese surprise attack on Pearl Harbor. This time the U.S. was a full-fledged member of the Allies of World War II, not just an "associate" as in the first war. During the war, the U.S. conducted military operations on both the Atlantic and Pacific fronts. After the war and devastation of its European and Asian rivals, the United States found itself in a uniquely powerful position due to the lack of damage to its domestic industries.
Franklin D. Roosevelt Roosevelt ran successfully for reelection in 1940. His victory made him the only U.S. President to serve for more than two terms. With World War II looming after 1938, Roosevelt gave strong diplomatic and financial support to China as well as the United Kingdom and the Soviet Union while the U.S. remained officially neutral. Following the Japanese attack on Pearl Harbor on December 7, 1941, an event he famously called "a date which will live in infamy", Roosevelt obtained a declaration of war on Japan the next day, and a few days later, on Germany and Italy. Assisted by his top aide Harry Hopkins and with very strong national support, he worked closely with British Prime Minister Winston Churchill, Soviet leader Joseph Stalin and Chinese Generalissimo Chiang Kai-shek in leading the Allies against the Axis Powers. Roosevelt supervised the mobilization of the U.S. economy to support the war effort and implemented a Europe first strategy, making the defeat of Germany a priority over that of Japan. He also initiated the development of the world's first atomic bomb and worked with the other Allied leaders to lay the groundwork for the United Nations and other post-war institutions. Roosevelt won reelection in 1944 but with his physical health seriously and steadily declining during the war years, he died in April 1945, just 11 weeks into his fourth term. The Axis Powers surrendered to the Allies in the months following Roosevelt's death, during the presidency of Roosevelt's successor, Harry S. Truman.