美国疆域的形成过程,是一部血迹斑斑充满污秽的对外扩张的发家史。1776年,北美十三州宣布独立时,只拥有大西洋沿岸的一条狭长地带,面积仅约有386,000平方英里。独立后,美国通过掠夺方式,使其领土从大西洋沿岸一直伸展到太平洋沿岸。到1890年,美国的领土面积就扩张至3,628,000多平方英里,比刚独立时增加了八倍以上。在美国疆域的形成历史中,对墨西哥领土的掠夺也是极其肮脏和极其可耻的一页。 The process of the formation of the United States territory is a blood-stained full of foreign expansion of the family history. In 1776, when the North American states declared independence, they only owned a strip of land along the Atlantic coast, covering an area of ​​only about 386,000 square miles. After independence, the United States plundered its territory from the Atlantic coast to the Pacific coast. By 1890, the U.S. territorial area expanded to more than 3,628,000 square miles, more than eight times the rate of independence. In the history of the formation of the United States territories, the plundering of the Mexican territory is also extremely dirty and extremely shameful.