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Votes:0 Timeline of Events Relevant to the Northern Plains Tribes Pre-1795 - Trading begun with Spanish and French merchants from St. Louis. 1804 The Sioux meet the Lewis and Clark expedition. Post Louisana Purchase - Trading posts established throughout the West to take advantage of established trade networks. Fur trading becomes an important part of Oglala life. Oglala and other Lakota tribes expand their region of influence and control to cover most of the current regions known as North and South Dakota, westward to the Big Horn Mountains in Wyoming
and south to the Platte River in Nebraska. 1834 - The Oglala become more centrally organized with most bands
following Bull Bear with many of the rest following Smoke. This was a change from
their previous more loosely governed bands with many leade Read More Go to Site
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