What caused the range wars?

Answer 1

Sometimes it was access to water, or pastures or markets. There were unbranded animals that had to be accounted for and there was the clash between sheepmen and cattlemen. Barbed wire Fencing was not used on the open range only to keep your cattle in, but also to deny other people's livestock access to your water. Sodbusters were constantly trying to settle the open range, and needed to be kept at bay even if they had some fancy government document that claimed they had a right to squat on land that the cattle barons had been using for decades.

Answer 2

Because the conflict between the farmers and rancher. Farmers want to farm the land but the Ranchers want there cattle to roam around to graze. This means that they argue over the land.

Answer 3

Ranchers and farmers fought over control of land .