Statistics for occurrence #1 of “Mississippi River” in entry united-states-of-america-missouri of Harper's Encyclopedia of United States History:

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One of the central United States, lies west of the Mississippi River , which separates it from Illinois, Kentucky, and Tennessee. Arkansas bounds it on the south. On the west, a line drawn south from Kansas City in about long. 94° 30′, separates the State...
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† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.