Abstract

Since the United States gained its independence in 1776, it has participated in more than 200 military activities during its less than 300-hundred-year history. So to speak, the Untied States is a martial country. The history of the Untied States can be written with wars.
This paper compared and analyzed the effects of wars on the economy, politics and territory of the Untied States. It was an analysis of American history from the perspective of war. Because there were countless wars in the history of the US, this paper mainly takes some important and meaningful ones as examples, such as the American Revolution, the Civil War, and the two World Wars and so on.
It is from a special angle to observe the US from the perspective of war. The history of the United Stated cannot develop without wars, which has already become one of essential elements in its development. These wars have more or less affected the development of the US in the areas of economy, politics and even territory. The US cannot develop without wars in its history, so does the modern Untied States. 

Keywords: history of the US; the perspective of wars; comparison and analysis

摘要

自1776年美国独立以来，这个建国至今不足300年的国家所参与的战争和对外军事行动多达二百多次。从古至今美国都是一个好战的国家，它的历史可以用一场场战争来书写。
这篇论文主要是从战争对美国的经济，政治和领土三个方面的影响来进行比较和分析，站在战争的视角来分析美国的发展史。由于美国历史上的战争数不胜数，所以该论文主要选取了那些对美国发展有着重大影响和历史意义的战争来进行分析，例如独立战争、美国内战和两次世界大战等。
     战争已经成为观察美国发展的一个独特视角，美国历史的发展离不开战争。可以说，这些战争都从一定程度上影响了美国经济、政治和领土的发展，战争已经成为美国发展不可或缺的因素之一，历史上的美国如此，现代的美国亦是如此。

关键词：美国发展史；战争的角度；比较和分析