First of all, Pearl Harbor was and still is a part of country (we never declared war on Pearl Harbor). Second, I assume you're asking when we declared war on Japan BECAUSE of the attack on Pearl Harbor. Pearl Harbor was attacked on December 7, 1941. Roosevelt declared war on December 8th.
No we declared war on japan then Hitler declared war on us all after pearl harbor
He declared war on the US.
The US declared war on Japan. Germany also declared war on the US, and the US declared war in return
FDR declared war on the Japan
Declared war
Declared war.
Japan and Germany declared war on the US.
Germany
He declared war.
After Pearl Harbor we declared war on Japan, in responce Germany declared war on us.
Immediately. We declared war on Japan & then Germany declared war on us.
The US did enter into an undeclared shooting war with Germany in the fall of 1941 because Germany has declared war on the US.