西进运动指的是美国在北美大陆由东向西不断拓展、移民和大规模开发西部疆域的过程,涉及的疆域东自阿巴拉契亚山脉,西至太平洋沿岸,从18世纪末到20世纪初,历时一个多世纪,奠定了美国发展壮大的基础,让美国从地处一隅的小邦,变成一个泱泱大国。美国西进运动主要包含领土扩张、自由移民和经济开发三大内容。西进运动给美国带来的直接变化是领土的扩张。美国的版图最初只有阿巴拉契亚山脉以东沿大西洋的狭长地带。在“天定命运”思想的影响下,美国 The westward movement refers to the process by which the United States continues to expand from east to west in the North American mainland and immigrates to develop the western region on a large scale. It involves the east from the Appalachian Mountains to the Pacific coast from west to the end of the eighteenth century to the twentieth century At the beginning, it lasted more than a century and laid the foundation for the United States to grow and develop. The United States has turned itself into a great power from a small state located in a corner. The Westward Movements of the United States mainly include the three major elements of territorial expansion, free migration and economic development. The direct change brought by the westward movement to the United States is the expansion of territory. The map of the United States was originally only the narrow strip of the Atlantic Ocean east of the Appalachian Mountains. Under the influence of “destiny ” thought, the United States