There were more trees to make timber in the East; more stones and rocks; more coal, petroleum, and oil... and products made from these were scarce in the Plains. Even salt water (ocean) and fresh water was scarcer in the Great Plains than in the East.
Men in the East made cotton, sugar, salt, and corn oil.
The East up through the early 1900s was still thickly wooded; even now, much is still rural woodlands. Where-ever you have woodlands, you have plentiful small game, birds, deer, snakes, and insects. So if no woodlands, you would also not have the wildlife or insects. And without woodlands, the soil would not be rich loam and would not retain moisture.
All of the answers are correct
water,food and shelter
land
Buffalo
water
Buffalo
Buffalo
160 acres were inadequate for productive farming on the rain-scarce Great Plains
According to the economic theory of scarcity literally all products are technically scarce because production is limited but certain items are exceptionally scarce. gold products, diamonds, truffles, petroleum products, services that are scarce now include, horse ferrior, watch makers and any other antiquated trade
life
Land is, by nature, finite. However, I believe that entrepreneurship is probably the most scarce of the four factors.
Natural Resources
Crude oil and natural gas are the natural resources that are likely to be scarce in the next 100 years or so.
they moved because of food being so scarce