<P> The Perry Expedition was a diplomatic expedition to Bakumatsu period Japan, involving two separate trips by warships of the United States Navy, which took place during 1853--54 . The goals of this expedition included exploration, surveying, and the establishment of diplomatic relations and negotiation of trade agreements with various nations of the region; opening contact with the government of Japan was considered a top priority of the expedition, and was one of the key reasons for its inception . The expedition was commanded by Commodore Matthew Calbraith Perry, under orders from American President Millard Fillmore . Perry's primary goal was to force an end to Japan's 220 - year - old policy of isolation and to open Japanese ports to American trade, through the use of gunboat diplomacy if necessary . The Perry Expedition led directly to the establishment of diplomatic relations between Japan and the western "Great Powers", and eventually to the collapse of the ruling Tokugawa shogunate . </P> <P> The growing commerce between America and China, the presence of American whalers in waters off Japan, and the increasing monopolization of potential coaling stations by the British and French in Asia were all contributing factors in the decision by President Fillmore to dispatch an expedition to Japan . The Americans were also driven by concepts of Manifest Destiny and the desire to impose the benefits of western civilization and the Christian religion on what they perceived as "backward" Asian nations . By the early nineteenth century, the Japanese policy of isolation was increasingly under challenge . In 1844, King William II of the Netherlands sent a letter urging Japan to end the isolation policy on its own before change would be forced from the outside . Between 1790 and 1853 at least twenty - seven U.S. ships (including three warships) visited Japan, only to be turned away . </P>

Who led the mission to open up trade in japan