于'和7世纪首先被西班牙人探险发现，通过路易斯安那购买(803年)和墨西哥的割让(848年)而加入美国版图。
First explored by the Spanish in the 'th and 7th centuries, the region was added to the United States through the Louisiana Purchase (803) and a cession by Mexico (848).
美国购买路易斯安那地区是伴随着国内的反对之声而完成的。
The American purchase of the Louisiana territory was not accomplished without domestic opposition.
路易斯安那交易可以算作有史以来购买者获益最丰厚的地产交易了。
The Louisiana Purchase would prove to be one of the most profitable real estate transactions ever made.
算上利息的话，美国为购买路易斯安那共花费了23，213，568美元。
Including interest, America finally paid $23,213,568 for the Louisiana territory.
大部分地区通过803年路易斯安那的购买归属美国，路易斯和克拉克在805年和80'年勘查了此地。
Most of the area passed to the United States through the Louisiana Purchase of 803 and was explored by Lewis and Clark in 805 and 80 '.
大部分地区通过803年路易斯安那的购买归属美国，路易斯和克拉克在805年和80'年勘查了此地。
Most of the area passed to the United States through the Louisiana Purchase of 803 and was explored by Lewis and Clark in 805 and 80 '.
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