在世界历史中，美国是从地区开发中获益最大的国家，其西部开发消除了与东部经济的地域差异，从而在整体上使美国东西部经济一体化，形成世界上最大的国内市场。西部开发不但使美国迅速成为一个新兴的经济强国，而且是保持这种经济强国地位的必要条件。西部的所谓“小麦王国” In the history of the world, the United States is the country that has benefited most from regional development. Its development in the western region has eliminated the geographical differences with the eastern economy and, as a whole, has brought the economy of the eastern and western parts of the United States into the largest domestic market in the world. The development of the western region not only prompts the United States to become a rapidly emerging economic power but also a necessary condition for maintaining such an economic power. The so-called “kingdom of wheat” in the west