in 1860 there were 130,000cattle in the west, all in Nebraska and Kansas. By 1880, there were 4.5 millioncattle, half of those were in Colorado, Wyoming, Montana, Dakota. They all ate the grass
buffalo became hard to find - the cattle were eatingall the grass and notspreading the seeds like the buffalodid
As buffalo became hard to find - some IP went to work as cowboys. This mean they had to leave their traditionallifestyles and live a settledlifestyle where they worked for money and depended on ranches for employment