| http://www.w3.org/ns/prov#value | - Land speculators founded two of eastern South Dakota's largest present-day cities: Sioux Falls in 1856[49] and Yankton in 1859.[50] In 1861, the Dakota Territory was established by the United States government (this initially included North Dakota, South Dakota, and parts of Montana and Wyoming).[51] Settlement of the area, mostly by people from the eastern United States as well as western and nor
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