It gets less, because there is less atmosphere above you, so less weight pushing down.
The Great Plains
yes
,
Horses changed the Plains people's lives because they can take you places.
The great plains
it did not
yes
Possibly:loss of the buffalorailroadstelegraph
They mainly lived in teepees because they were always moving around hunting buffalo.
You use it to oil the grand clock (Diamond Plains) to get the trains moving.
It change by how it change over a few years ago
fish, transportation and water