1904年美国圣路易斯世博会缘起于一个伟大事件。1804年,美国与其时雄霸欧洲大陆的拿破仑谈成一笔重大交易,用金钱购买领土,这也是素来信奉金钱交易的美国人的一大创举。最终结果是,一块面积达210多万平方公里的广袤土地,被美国人用1500万美元轻松搞定,老美交易手腕着实了得。这块土地的姓名颇为女性化,叫路易斯安娜。美利坚合众国的领土面积一夜之间扩大近2倍。这对美国当然是一件值得纪念的大事,对 In 1904, the United States St. Louis World Expo was due to a great event. In 1804, the United States negotiated a major deal with Napoleon, who had dominated the European continent, and used money to purchase territory. This was also a big move for Americans who had always believed in monetary transactions. The end result is that a vast expanse of land with an area of ​​2.1 million square kilometers is easily settled by the Americans with 15 million US dollars. The old American trading wrists are really good. The name of the land is rather feminine, called Louisiana. The territory of the United States of America has nearly doubled in size overnight. This is certainly a memorable event for the United States.