What were 4 reasons for westward expansion

dry farming, wind mills, barbed wire, reaper, steel plow, sod houses Who was an exoduster? An African-American (ex-slave) who moved west for land and opportunity. Who was a rancher? Person who raised cattle What was the long drive? Trail on which cattle were lead to be slaughtered . What were some challenges the cowboys faced on the long drive? ................
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