first answer:
Because the US stopped supplying them with oil, steel, etc that was needed for their war efforts (because Japan was allied with the US' enemies). Japan thought they could destroy the entire Pacific fleet (or at least all of our aircraft carriers) by striking Pearl Harbor undetected - and they were almost correct. They thought that by severely damaging our ability to wage a war in the Pacific, we would be forced to start selling oil to them.
second answer:
The real reason for Japan's attack (on the US, the British Empire & the Dutch) was the Japanese Army's obsession with their on-going brutal conquest of China. The United States had been taking diplomatic and economic steps against Japan for several years to convince (or force) the Japanese to end their war of conquest in Asia. The Japanese Army actually controlled the Japanese Government since the early 1930's. The Japanese Army refused to end its war of conquest & extreme brutality in China.
Beyond China, the Japanese Army had plans to take advantage of the weakness of the British, French, Dutch & Soviet Union in Asia because of Hitler's conquests in Europe. The Japanese wanted to be free of American interference, and create a vast Asian empire that would have eventually included China, eastern Siberia, Mongolia, Korea, Formosa, Indo-China, Thailand, Burma, Malaysia, Indonesia, Borneo, Sumatra, Java, Philippines, Guam, Wake Island, & New Guinea; and possibly India.
The Japanese military thought that the best way to keep the United States from interfering in their plans in Asia, was to deliver a surprise attack on various US bases throughout the Pacific to do as much damage to the US Military capability in the Pacific. At Pearl Harbor, they intended to sink as many battleships, cruisers & aircraft carriers as possible. At Manila they intended to follow-up with an invasion and capture of the Philippines. At Wake Island they intended to seize the island. The Japanese also attacked the bases, ships & troops of the British Empire. All this was intended to persuade the United States & Britain to negotiate a settlement giving the Japanese most of the western Pacific territories, and most of Asia. They hoped that the US & Britain would not want to fight a prolonged & costly war in Asia to liberate what territory the Japanese could capture in the first six months of the war.
They hoped it would distract America to keep them from involving themselves in the war. Unfortunately it had the opposite effect.
Germany didn't attack pearl harbor dumb***, that was japan
China did not attack Pearl Harbor, Japan did.
Japan had the resources for an attack on Pearl Harbor. They simply needed more resources to continue the war.
You have some serious reading to do. Pearl Harbor did not attack Japan. The US Naval Base at Pearl Harbor HI was attacked by the Japanese on Dec 7, 1941. The American ships were tied up at their morring points in the harbor, and there had been no declaration of war. This was an unprovoked attack by Japan on the United States.
The Japanese bombed Pearl Harbor
Germany didn't attack pearl harbor dumb***, that was japan
no pearl harbor was part of America and pearl harbor was bombed by japan
japan
No.
yes.
Commander Mitsuo Fuchida led Japan's army to attack the United States at Pearl Harbor.
China did not attack Pearl Harbor, Japan did.
The empire of Japan
Japan had the resources for an attack on Pearl Harbor. They simply needed more resources to continue the war.
The Japanese attacked the US in pearl harbor,Hawii.
The Japanese bombed Pearl Harbor
You have some serious reading to do. Pearl Harbor did not attack Japan. The US Naval Base at Pearl Harbor HI was attacked by the Japanese on Dec 7, 1941. The American ships were tied up at their morring points in the harbor, and there had been no declaration of war. This was an unprovoked attack by Japan on the United States.