A SOUTH DAKOTA CHRONOLOGY
1683. Le Sueur probably visited Sioux Falls to buy furs which he shipped by flatboat to the mouth of Mississippi.
1700. Le Sueur's traders from Fort L'Huillier (Mankato, Minnesota) traded on Big Sioux River at Flandreau and Sioux Falls.
1743. Vérendrye visited western part of South Dakota and claimed soil for French king. Planted lead plate inscribed with arms of France, probably near Pierre.
1745. De Lusigan visited Big Stone Lake to call in unlicensed traders.
1750. Teton Sioux at about this date, having driven Omahas from Big Sioux and James river valleys, reached Missouri River and engaged Rees in forty years' war.
1775. Oglala Tetons discover Black Hills and soon afterward drive Kiowas from that region.
1780. Yankton and Yanktonais Sioux, about this date, having been driven from western Iowa by Ottos, came up and settled in James River valley.
1785. Pierre Dorion, afterward guide to Lewis and Clark, married a Yankton woman and settled in trade at mouth of James River.
1790. Pierre Garreau settled with Rees at mouth of Grand River.
1792. Sioux finally conquer Rees and drive them from their strong position in neighborhood of Pierre. The Rees retreat up river and settle with relatives at mouth of Grand River.
1796. Loisel, or L'Oiselle, builds post on Cedar Island, between Pierre and Big Bend. First recorded post in South Dakota.
1797. Trudeau builds "Pawnee House" on east side of the Missouri, opposite Fort Randall, in Charles Mix County.
1804. Lewis and Clark explore Missouri valley through South Dakota, en route to Pacific.
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