How did the US know they were going to be attacked by Japan?

Japan attacked The US on December 7, 1941.

Japan thought that the US was going to attack them so Japan attacked us first even though we were not going to attack them. And pearl harbor ended when Japan ran out of planes on there carriers.

Japan attacked the US, and later that same day attacked British colonies near Japan.

The US stopped exporting steel, aviation fuel, and scrap iron to Japan. Japan got mad and allied with Germany and Italy and eventually Japan attacked the US. On the day of Dec. 7, 1941, diplomats from Japan were meeting with Congress in Washington to make peace with the US. Well, as that was going on, Japanese fighter planes attacked Pearl Harbor.

The Us and Japan were at war, after Japan had attacked the US. Japan had refused to surrender to the US.

They pooped on their chests.

Because the Japanese had attacked the US

No of course not. However the Americans did find out that Japan was going to attack them, but they didn't know when and where. They found this out by cracking the Japanese code, that was being sent through. Japan wanted the attack on Pearl Harbor to be a surprise, so the US would not be prepared to defend themselves. This is why the U.S. lost many men, planes and ships when Japan bombed Pearl Harbor…

Actually, it was Japan that attacked the US first. We retaliated by entering into WW2. To end the war with Japan, the US dropped atomic bombs on Hiroshima and Nagasaki. This caused Japan to surrender, marking the end of the war.

Japan strengthened it's air defenses.

It was the attacked that made Japan surrendered.

Without warning, Japan attacked Pearl Harbour.

Japan attacked China in the 1930's, Germany attacked Poland in 1939, then Japan attacked the US in 1941...global war.

Because japan attacked the U.S. first

The Japanese attacked the US in pearl harbor,Hawii.

we got dragged into ww2

Because they have attacked Pearl Harbor.

because japan attacked pearl harbor (i don't know the dates) and the us got mad and also because japan and Germany sank some of their ships.so they went to war

There are books written that state that the US did know.

Japan they attacked pearl harbor

because we were trying to help Asia and then Japan attacked Pearl Harbor

Because America and Japan were at war- Japan having attacked the US, and declared war on the US.

The US did know about radiation when they dropped the bombs on japan it was a risk they were willing to take to save ournation from going into war with them. hope this helped you.

Japan attacked the US naval Base in Pearl Harbor killing over 3,000 people.

At that time they were at war with China, we sanctioned their supply of goods and they attacked us.