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As the first independent capital本论文由英语论文网www.51lunwen.org整理提供ism country of the mainland of America, the birth of the new USA symbolized the tremendous leap in American history. Newly independent America drew on the policy of western aggrandizement. On one hand, thousands upon thousand immigrants moved from east to west. On the other hand, the whole country changed from an agriculture country to an industrial country. Finally it helped to bring about a birth of modern USA.
During Westward Movement, the government laid out a series of policies, such as immigrant policy and capital investment. Between 1820～1860，about five million immigrants came into USA, it provided adequate labors. Furthermore, the Homestead Act of 1862 was the important legislative act of 19th century. The land policy of American government at that moment provided institution and policy guarantee for peasants to get the soils and develop agriculture. Therefore, it promoted the westward exploitation, and also spurred USA to a great agriculture country rapidly. During 1815-1840, government invested 125 million dollars to every state for building 3000 miles’ canal. This period American transportation got a big boost. For another, there were policies of fostering development of education, attracting more foreign investment, perfect manpower, environmenta本论文由英语论文网www.51lunwen.org整理提供l protection and so the like. [2] (P365-412) Under these effective strategies, American people constantly opened up. This westward movement, across what was often called the American frontier, was of enormous significance.  They not only contributed to the expansion of American territory, influence on American politics， but also formed American characters. At last, the frontier life in Westward Movement brought plentiful source material to American culture and art in the future.

A. Promoting American Economic Development
Western exploitation utterly changed American appearance: large quantities of barren lands were reclaimed; a lot of capital farms were set up; the development of agriculture in west provided a large amount of food, material and domestic market on industrial development; nature recourses were opened up to develop industries. Furthermore, trade and transportation had got new leaps……A well-known British statisticians Parker said in the book of the Secret of American Economic Success: “The
United States is in an especially outstanding natural environment. She can enjoy the commercial marine. The Easters Ports are open to the busiest Europe. The United States is leading the development of the world. ” [3] (P23) The economists Falkland of the U.S. Economy School said: “No other county in the history like America has such abundant resources. As one of the large industrial countries, America must本论文由英语论文网www.51lunwen.org整理提供 have a large number of important minerals. Westward Movement stimulates creativity and economic vitality of the United States. It is enhancing the Comprehensive national strength and international status in the United States. It is paving the way of the economy of the United States.” [1] (P142).
However, recalling the history of the developing process of the United States, the first 13 British colonies before independence had only a small place from Appalachian Mountains to the east of the Atlantic 本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。