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Something Critical Was Just Found In America's Oldest National ParkBut by the 1800s, unchecked hunting brought the bison population near extinction. Before westward expansion in the early 19th century, scientists commonly estimated the bison herd's number to be ...
What happened in 19th century society to allow the mass extinction or near mass extinction of so many animals? How did views of Yellowstone and its role in American culture help impact the bison?
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