Americans were the white settlers.
<span>A. Many people took out risky loans that could only be repaid if stock prices continued to rise. (apex)</span>
Congress cannot set political conditions on states.
Department of Agriculture
I believe the answer is Barbed Wire.
Befor the inventions of barbed wire, the Cattles are let to roam freely across the plains and the owners are required to pay a lot of cowboys to supervise them so they didn't go missing. Witht he invention of barbed wire, they can keep the cattle in a secure place without supervision.
