Why did Japan Bomb Pearl Harbor?

The Japanese were planning a conquest on southeast Asia and were also planning on taking the Dutch east Indies and Berma to gain enough oil to support their economy and military. But first, they had to take out the U.S. naval fleet so that the U.S. could not help the the Dutch and British defend these areas. During that morning, on December 7, 1941, the Japanese bombed Pearl Harbor in Hawaii and the U.S. successfully defended some of their ships. The naval fleet had been nearly destroyed, but some ships still stood afloat, on the docks of Pearl Harbor. The Japanese thought that this bombing had been a success, so they continued with the conquest. After this devastating and suprising attack, the U.S. declared war on Japan. Right away the U.S. sent troops over to Japanese territories.