Up to this decade the pine belt of the Middle West, in northern Michigan, Wisconsin, and Minnesota had been the field of operations of Indian traders. At first under English companies, and afterward under Astor's American Fur Company, the traders with their French and half-breed boatmen skirted the Great Lakes and followed the rivers into the forests, where they stationed their posts and spread goods and whiskey among the Indians. Their posts were centers of disintegration among the savages. The new wants and the demoralization which resulted from the Indian trade facilitated the purchases of their lands by the federal government. The trader was followed by the seeker for the best pine land "forties"; and by the time of the Civil War the exploitation of the pine belt had fairly begun. The Irish and Canadian choppers, followed by the Scandinavians, joined the forest men, and log drives succeeded the trading canoe. Men from the pine woods of Maine and Vermont directed the industry, and became magnates in the mill towns that grew up in the forests,--millionaires, and afterwards political leaders. In the prairie country of the Middle West, the Indian trade that centered at St. Louis had been important ever since 1820, with an influence upon the Indians of the plains similar to the influence of the northern fur trade upon the Indians of the forest. By 1840 the removal policy had effected the transfer of most of the eastern tribes to lands across the Mississippi. Tribal names that formerly belonged to Ohio and the rest of the Old Northwest were found on the map of the Kansas Valley. The Platte country belonged to the Pawnee and their neighbors, and to the north along the Upper Missouri were the Sioux, or Dakota, Crow, Cheyenne, and other horse Indians, following the vast herds of buffalo that grazed on the Great Plains. The discovery of California gold and the opening of the Oregon country, in the middle of the century, made it necessary to secure a road through the Indian lands for the procession of pioneers that crossed the prairies to the Pacific. The organization of Kansas and Nebraska, in 1854, was the first step in the withdrawal of these territories from the Indians. A period of almost constant Indian hostility followed, for the savage lords of the boundless prairies instinctively felt the significance of the entrance of the farmer into their empire. In Minnesota the Sioux took advantage of the Civil War to rise; but the outcome was the destruction of their reservations in that State, and the opening of great tracts to the pioneers. When the Pacific railways were begun, Red Cloud, the astute Sioux chief, who, in some ways, stands as the successor of Pontiac and of Tecumthe, rallied the principal tribes of the Great Plains to resist the march of civilization. Their hostility resulted in the peace measure of 1867 and 1868, which assigned to the Sioux and their allies reservations embracing the major portion of Dakota territory, west of