U.S. signs Fort Laramie Treaty (1851)Sep 17, 1851Labels: Fort Laramie, Plains NationsNPSFort Laramie 1851
Kansas–Nebraska Act accelerates settlement pressureMay 30, 1854Labels: Kansas Nebraska, Kansas TerritoryNatl ArchivesBritannica
Grattan Fight sparks the First Sioux WarAug 19, 1854Labels: Grattan Fight, LakotaGrattan MassacreUtley bio
Dakota War begins in Minnesota River valleyAug 18, 1862Labels: Dakota War, Minnesota RiverDakota War 1862MNHS
Mankato mass execution of 38 Dakota menDec 26, 1862Labels: Mankato Execution, DakotaMankato 1862Amon Carter
Bozeman Trail opens through Powder River CountryJan 1, 1863Labels: Bozeman Trail, John BozemanBozeman TrailMontana Hist
Fetterman Fight devastates U.S. detachmentDec 21, 1866Labels: Fetterman Fight, Red CloudFetterman FightWyoming SHPO
Medicine Lodge Treaties create southern Plains reservationsOct 21, 1867Labels: Medicine Lodge, Southern PlainsMedicine LodgeKansas Hist
Fort Laramie Treaty (1868) establishes Great Sioux ReservationApr 29, 1868Labels: Fort Laramie, Great SiouxNatl ArchivesFort Laramie 1868
Washita River attack kills and captures CheyenneNov 27, 1868Labels: Washita River, George CusterNPS WashitaWashita River
Indian Appropriations Act ends U.S. treaty-makingMar 3, 1871Labels: Indian Appropriations, U SNatl ArchivesAppropriations 1871
Second Battle of Adobe Walls triggers Red River WarJun 27, 1874Labels: Adobe Walls, Red RiverTSHAAdobe Walls 1874
Battle of the Rosebud checks Crook’s advanceJun 17, 1876Labels: Battle of, George CrookRosebudHISTORY
Battle of the Little Bighorn defeats Custer’s battalionJun 25, 1876Labels: Little Bighorn, George CusterBritannicaLittle Bighorn
Dull Knife Fight destroys Cheyenne winter villageNov 25, 1876Labels: Dull Knife, Northern CheyenneDull KnifeDull Knife NRHP
Dawes Act launches allotment and “surplus” land salesFeb 8, 1887Labels: Dawes Act, Allotment PolicyBritannicaHISTORY
Wounded Knee Massacre ends major Plains armed conflictDec 29, 1890Labels: Wounded Knee, LakotaBritannicaWounded Knee
