On December 7, 1941, following the Japanese bombing of Pearl Harbor, the United States declared war on Japan. Three days later, after Germany and Italy declared war on it, the United States became fully engaged in the Second World War.
Many Americans volunteered to defend the nation from enemy bombing or invasion. They trained in first aid, aircraft spotting, bomb removal, and fire fighting. Air raid wardens led practice drills, including blackouts. By mid-1942 over 10 million Americans were civil defense volunteers.
During World War II, the United States began to provide significant military supplies and other assistance to the Allies in September 1940, even though the United States did not enter the war until December 1941.
Isolationists believed that World War II was ultimately a dispute between foreign nations and that the United States had no good reason to get involved. The best policy, they claimed, was for the United States to build up its own defenses and avoid antagonizing either side.
Once the United States entered the war after the attack on Pearl Harbor, the Axis cause was largely doomed. America mobilized 12 million soldiers — about the same number as did the Soviet Union, despite having a population of about 40 million fewer citizens.
The U.S. entered WWII because the Japanese bombed U.S. battleships and airplanes at Pearl Harbor, Hawaii. The U.S. declared war on the Axis powers on December 7, 1941.
On December 7, 1941, Japan staged a surprise attack on Pearl Harbor, decimating the US Pacific Fleet. When Germany and Italy declared war on the United States days later, America found itself in a global war.
Hitler's invasion of Poland in September 1939 drove Great Britain and France to declare war on Germany, marking the beginning of World War II. Over the next six years, the conflict would take more lives and destroy more land and property around the globe than any previous war.
The United States later declared war on German ally Austria-Hungary on December 7, 1917. Germany's resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson's decision to lead the United States into World War I.
Basically defending Europe from the Soviet Union proposing communist governments in their country. The main reason why we joined the Allies in WWII is the surprise attack from the Japanese on Dec 7, 1941. We then declared war with both Japan and Germany due to their aggression towards the US during that time.
The ultimate factor that led to involvement in the war was the Japanese attack on Pearl Harbor that killed thousands of US servicemen. Roosevelt called upon Congress for a declaration of war, and Congress voted in favor, so the US joined the war effort.
Although in retrospect U.S. entry into World War II seems inevitable, in 1941 it was still the subject of great debate. Isolationism was a great political force, and many influential individuals were determined that U.S. aid policy stop short of war.
Basically defending Europe from the Soviet Union proposing communist governments in their country. The main reason why we joined the Allies in WWII is the surprise attack from the Japanese on Dec 7, 1941. We then declared war with both Japan and Germany due to their aggression towards the US during that time.
Instead, America's entry changed the course of the war. In addition to troops, the United States provided arms, tanks, ships, fuel and food to its friends. This aid helped the Allies win. You could say Stubby joined the Army in 1917.
Most Russians believe the Soviet military would have been able to win World War II without the efforts of the U.S. or its allies, a new poll finds. The Soviet Union suffered the most casualties in the conflict, and the issue is highly emotional for many Russians.
Mobilization provided opportunities for women and minorities to improve their socioeconomic positions for the war's duration, while also leading to debates over racial segregation. Wartime experiences also generated challenges to civil liberties, such as the internment of Japanese Americans.