Match(a)invention effectively ended the era of the cowboys’ long “drives" and the open range system (b)conflict in 1890 that resulted in the massacre of over 300 sioux, including women and children (c)reserved land in the black hills of the dakotas for the indians under the agreement to not harass or threaten western settlers (d)led the coalition of plains tribes against the us’ seventh cavalry unit and defeated them at the june 1876 conflict known as battle of little big horn 1.barbed wire 2.fort laramie treaty 3.sitting bull 4.wounded knee