answersLogoWhite

0


Best Answer

For World War I, April 6, 1917.

For World War II, the US declared war on Japan on December 8, 1941, the day after the Pearl Harbor attack. Germany and the other Axis powers then declared war on the US on December 11, 1941.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

13y ago

No one know why " exactly " Germany and Italy declared war on the united states after the attack of pearl harbor "they did not need a 3rd front to fight on"

bat i think that because when U.S wase a Neutral country , Germany U-boat can not attack ther ships heading to U.K "and the US Navy Neutrality Patrol had ensured safe passage of merchant ships bound for England , so the siege of U.K was not effective

they take the opportunity of U.S declare war on Japan and they did the same .

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

The US did NOT declare war on either Germany or Italy. The US declared war on Japan, following the Japanese attack on Pearl Harbor. President Roosevelt did not ask congress to declare war on either Germany or Italy when he asked for a declaration of war against Japan the day after Pearl Harbor, December 8, 1941. Germany and Italy were allies of Japan in "the Axis" (the "Rome-Berlin-Tokyo Axis"). Under the terms of the alliance agreement Germany was obligated to go to war as an ally of Japan IF Japan was attacked, but NOT if Japan did the attacking. Nevertheless on December 11, Germany declared war on the US, followed a few hours later by Italy's declaration of war against the US. This was the only time during WWII that Germany actually declared war on another nation. Usually, they just invaded your country and let you figure out that you were at war.

This answer is:
User Avatar

User Avatar

Wiki User

7y ago

To show unity with Japan they declared war within days after the attack. But this was a mistake as it allowed the US to enter the war in Europe against them without having to have congress debate a declaration of war first (which could likely have failed to pass).

This answer is:
User Avatar

User Avatar

Wiki User

14y ago

It was immediately after Pearl Harbor, which was on 7th December 1941.

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

Adolf Hitler and the Axis forces declared war on the USA a week after the Japanese military bombed Pearl Harbor, Hawaii on December 7, 1941.

This answer is:
User Avatar

User Avatar

Wiki User

9y ago

Because the United States declared war on Japan after Pearl Harbor.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

December 11, 1941

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why did the US declare war on germany and italy in 1941?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

When did Germany and Italy declare war on the you.s?

December 11th, 1941


When did Germany and Italy declare war on the US?

Germany and Italy declared war on the US on Dec. 11, 1941 after the US declared war on Japan because of the bombing of Pearl Harbor on the 7th. The United States never did declare war on Germany/Italy.


When did the US declare war on Germany and Italy in World War 2?

Actually Germany declared war on America first. Immediately after Pearl Harbor, which was on 7th December 1941.


When did Germany and France declare war on the us?

France never declared war on the US. it was part of the allies. Germany, Italy & Japan declared war in 1941-1942 on the US


When did US declare war on Germany and Italy in World War 2?

America didn't declare war on Germany and Italy, it was the other way round. As part of the Axis Pact, once war was declared between the empire of Japan and the United States, Germany and Italy declared war on America on the 11th of December 1941, 4 days after the attack on Pearl Harbour.


When did Italy and Germany declare war in the US?

in 1942


What year did us declare war on Germany?

1941 late December.


When did Germany declare war against the US?

December 11, 1941.


Did Germany declare war on the US or did the US declare war on Germany?

Germany and Italy declared war on the United States on December 11, 1941 in compliance with their agreement with Japan to do so; and the US responded by declaring war on both Italy and Germany. In fact the the US and Germany had been in in a virtual state of war for almost a year already considering the American's active support for Britain and the Soviet Union through lend lease, and the Atlantic convoy system.


In what year did the US declare War against Germany?

December 11, 1941, immediately after Germany declared war on the US.


On what date did the us declare war on Germany?

December 11, 1941. only hours after Germany declared war on the US


Why did Italy and Romania declare war on Soviets?

Italy and Romania declared war on the Soviets at the same time as Germany was because Italy and Romania were with Germany in the Axis alliance.