when did the united states officially entered ww2
Military history of the United States during World War II Following the attack on Pearl Harbor, President Roosevelt officially pronounced 7 December 1941, as "a date which will live in infamy" and asked for a declaration of war on Japan before a joint session of Congress on 8 December 1941. The motion passed with only one vote against it, in both chambers. Just three days later, on 11 December 1941 Adolf Hitler declared war on the United States, and had already remarked on the evening of the date of the Japanese attack that "We can't lose the war at all. We now have an ally which has never been conquered in 3,000 years".[28]
History of the United States Armed conflict began in 1775 as Patriots drove the royal officials out of every colony and assembled in mass meetings and conventions. In 1776, the Second Continental Congress declared that there was a new, independent nation, the United States of America, not just a collection of disparate colonies. With large-scale military and financial support from France and the military leadership of General George Washington, the American Patriots won the Revolutionary War. The peace treaty of 1783 gave the new nation the land east of the Mississippi River (except Florida and Canada). The central government established by the Articles of Confederation proved ineffectual at providing stability, as it had no authority to collect taxes and had no executive officer. Congress called a convention to meet secretly in Philadelphia in 1787. It wrote a new Constitution, which was adopted in 1789. In 1791, a Bill of Rights was added to guarantee inalienable rights. With Washington as the first president and Alexander Hamilton his chief political and financial adviser, a strong central government was created. When Thomas Jefferson became president he purchased the Louisiana Territory from France, doubling the size of the United States. A second and final war with Britain was fought in 1812.
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.
Economic nationalism While the coining of the term "