Answer
Ranchers valued Montana grasslands for their abundance of grass and forage for their livestock. The open-range policy allowed ranchers to graze their cattle on public land, which had a negative effect on the Indians who had previously used the land for hunting and gathering. The main reasons for the increase in the cattle industry were the availability of public land, the development of railroads, and the demand for beef. Some of the differences between Granville Stuart, Evelyn Cameron, and Charles M. Russell are that Granville Stuart was a rancher and politician, Evelyn Cameron was a photographer, and Charles M. Russell was an artist.