In which of the following ways does the Treaty of Fort Laramie exemplify a
change that took place in the U.S. government's strategy for dealing with "the
Indian problem" during the second half of the 19th century?

A. It promises that the American Indians will be in complete control
over their reservation.
B. It codifies an agreement between the government and the
American Indians with a treaty.
C. It demands that the American Indians cease any interference with
American interests.
D. It calls for assimilation of American Indians by forcing them into
American-style schools.