Hawaii
The attack on Pearl Harbor, in 1941, was carried out by Japan.
With a declaration of war.
japan
The Japanese.
Japan was the country that attacked the American bases and shipping at Pearl Harbour.
jk
They found it easier to get to pearl harbor because southern Japan is close to the sea leading them to pearl horbor.
The only country involved was the United States. Pearl Harbor is located in the current state of Hawaii. At the time of the attack by Japan, Pearl Harbor was located in the United States TERRITORY of Hawaii.
Japan
Japan
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.