In 1947, the three affiliated tribes were forced to accept the $5,105,625 offered by Congress and the Corps for their losses. This settlement, considered generous by many on Capitol Hill, meant they received about $33 for every hectare of their country, with improvements and severance pay. Of this amount, they would also have to pay the costs of moving and rebuilding. The agreement did not allow them to demand additional compensation from Congress or the courts. A severe smallpox epidemic devastated the Mandan, Hidatsa and Sahnish in 1866. Your autumn months have been a failure. After being deprived of their pensions, the authorities refused them any support. De Trobriand explained that the agents of the Indian office were nothing more than a vast association of thieves who made their fortunes at the expense of the Indians and at the expense of the government. Under the terms of the agreement, the United States would provide $50,000 to the various tribes for 50 years, set the territorial boundaries of each tribe, punish looting, and give the government the power to lay roads and build military fortresses in the Indian country and make other arrangements. (Kappler, 1904 Indian Affairs, Laws and Treaties, Washington, Vol. II, pp. 594-596) As a means of economic stability and tribal sustenance, Congress passed the Indian Gaming Regulatory Act on October 17, 1988. This legislation allowed Class III casino games on Indian reserves.
The law also gave Indian tribes the opportunity to enter into management agreements with outside investors to develop gaming facilities. AGREEMENT AT FORT BERTHOLD 1866 When more settlers flocked west, the government moved closer, under pressure from railways and settlers, to cede additional land for more land, the tribes. On July 27, 1866, the Arickara (Sahnish) signed an agreement by which they granted such rights of way east of Missouri and received in exchange a pension of $10,000 for the next twenty years. When the treaty was submitted for ratification, Congress added an addendum to that agreement, including mandan and Hidatsa on its terms, and provided for the surrender of land on the east bank of the Missouri River, which was about forty times twenty-five miles. . . .