There were of course other factors. While early humans did hunt them a lot due to the profits which they received from it (A lot of food, bones they could use for homes, fur they could use for clothing, etc.), there were also other factors such as less food for them which made them less mobile through different geographical regions, etc. (and therefore more susceptible to being hunted) that had played a part in their extinction.
ONe large one is that a ruler can not rise to power without a consensus of other people in the government and the public. A dictatorship is nearly impossible with a representative democracy.
The right answer for the question that is being asked and shown above is that: "B. As homesteaders moved into areas along cattle trails, they fenced their farms." One reason for the end of long cattle drives is that as<span> homesteaders moved into areas along cattle trails, they fenced their farms.</span>
Cliff dwellers who disappeared mysteriously were Anasazi Indians
