ismaelHayer ismaelHayer 11-02-2021 History contestada How did westward expansion affect Native American tribes? a Native American hunters were able to use the railroads to sell bison meat and hides for more money. b American settlers killed many bison, greatly lowering the population of this Native American food source. c Americans brought enslaved people with them to the west to do farm work. This caused the bison population to increase. d Because American settlers created many new farms, Native Americans started eating grain as well as bison meat.