American imperialism in 1800 is the main cause of the Japanese attack on Pearl Harbor, Hawaii. When Millard Fillmore sent Commodore Matthew Perry to open trading ports in Japan, the clock began ticking on when Japan and America would go to war against each other. Perry's demonstration of modern military weaponry sent the nation controlled by a feudal warlord, the Shogun, into a state of chaos and ultimately forced the removal of the Shogunate. The subsequent infusion of militarism and modernism into Japan led to the need for raw materials. America was a major producer of oil and trade was established between the two nations. Germany and Great Britain provided Japan with military training and equipment. Japan traded in scrap metal of all types which they smelted into high-quality steel and began to create its own modern military. However, neither America nor the West could not satisfy all their needs and desires, so Japan followed the Western plan of imperialism. They attacked China, Manchuria, fought with Russia in the Russo-Japanese War, took control of most and lost everything as Americans cleared out their homes and municipal or government officials sold off their property. On the West Coast, anti-aircraft exercises were commonplace, as were night-time blackouts, and coastal patrols were established along the Pacific and Atlantic coasts. Eventually Japanese fanaticism and their reluctance to surrender led an American president to use atomic weapons on two cities in Japan. The consequences of this action were not just seen instantly, but were seen for generations to come, and may be a major reason why no one has used so-called weapons of mass destruction since. However, many believe that the firebombs dropped night after night on Tokyo and other cities in Japan may have caused even more damage than the atomic bombs..