there are humans.
it is a food source for an animal that is a food source for humans
polution
Humans can fly (in jets, in plains) but not with crappy wax and feather "inventions".
yes
,
The negative impacts of the plains on the people is that they are usually displaced when the floods come. The other disadvantage is that the people cannot see other communities people coming to attack them.
Plains provide open spaces for agriculture, grazing, and development, which supports food production and economic activities. They also offer opportunities for recreational activities like hiking, bird-watching, and camping. The flat terrain of plains can make transportation easier and more accessible for humans.
Horses changed the Plains people's lives because they can take you places.
it did not
yes
Possibly:loss of the buffalorailroadstelegraph