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The Japanese attacked the United States. It wasn't just a little slap that they gave us it was an all out massacre. If they took control of the islands of Hawaii and Alaska as they planned, then they could eventually take over the whole country. Can't have that can we.

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16y ago
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12y ago

the Americans were mad that the pearl harbor was bombed

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12y ago

Japan bombed a US Naval Base. Eight U.S. Navy battleships were damaged, with four being sunk. If he didn't, then the world would view The US as a pushover that anyone could attack or invade.

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12y ago

the us had cut off supplies like fuel and scrap metal to japan

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10y ago

Because it violated there agreement that the U.S. had made with japan.And Japan said they wouldn't attack the U.S. so that's why America didn't worry.

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Q: Why did Roosevelt declare war after Pearl Harbor?
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Related questions

What incident forced president roosevelt to declare war?

it was the attack on Pearl Harbor by the Japanese


Did president Rossevelt declare war on his own?

No, President Roosevelt did not declare war on his own. The president can not declare war on his own. He did however, ask congress to declare war after the bombing at Pearl Harbor.


What did the US do about the attadk of Pearl Harbor?

President Roosevelt asked Congress to declare war on Japan, which Congress did.


What did the government do about the Pearl Harbor?

In response to Pearl Harbor, the president advised congress to declare war, which they did.


Did Hitler declare war after Japn bombed Pearl Harbor?

No we declared war on japan then Hitler declared war on us all after pearl harbor


How did Franklin Roosevelt lead Pearl Harbor?

he didnt lead pearl harbor he was president of the usa but he did avenge pearl harbor by declaring war on japan


What happened after Pearl harbor was attacked with roosevelt?

He declared war.


What battle caused the US to declare war on japan?

Pearl Harbor.


When did the allies declare war on japan in world war 2?

Sorry for that last answer. Some people. It all started with Pearl Harbor for America. Since so much damage was inflicted, Roosevelt soon asked the UN to declare war on Japan.


How did Franklin Delano Roosevelt impact Pearl Harbor?

Entered the war


What was the order of the ships hit in pearl harbor?

1234 i declare a thumb war.


Americas response to the pearl harbor bombings?

To declare immediate war on Japan.