When Lewis & Clark saw the West in the first years of the 1800s it still preserved the healthy biodiversity of Native-managed ecologies in place for 10,000 years. Within thirty years, everything had changed. Americans arrived in the West with religious traditions that taught animals were created solely for human use. And they introduced an economic system that made western animals commodities in a global market, an economy that snagged Native people in the trade and created the first American millionaires. By 1840 ancient western ecologies evolved around sea otters, fur seals, beavers and many other species were collapsing in both the interior and on the coasts. For some the period produced romantic figures like the mountain men. Witnessing such destruction, however, even some of their peers saw the casual loss of the ancient West very differently.

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