虽然取得了独立战争的胜利,但其他国家的势力并没有完全撤离美国。美国从拿破仑手中购买了路易斯安那地区,但取得一块土地不代表就能统治它。为了扩大在中西部的影响力,杰斐逊派出探险队对美国西部进行了第一次探索。经历了为期28个月艰苦卓绝的探险后,梅里韦瑟·刘易斯和威廉·克拉克带领队伍完成了美国历史上最伟大的军事开拓。 Although the victory of the War of Independence was won, the forces of other countries did not completely withdraw from the United States. The United States buys the Louisiana area from Napoleon, but does not rule it out by getting a piece of land. To expand its influence in the Midwest, Jefferson dispatched an exploration team to conduct the first exploration of the western United States. After 28 months of arduous exploration, Meriwether Lewis and William Clarke led the team to the greatest military exploit in American history.