Jonathan Thompson: The West’s population grows and churns

Ever since 1790, when the U.S. Census started keeping track of such things, the migratory flow of non-Indigenous people within the United States has moved from East to West, into lands they erroneously saw as a blank slate, and not so erroneously as a land rife with natural resources to exploit.Americans are still mobile and still moving West, but over time, the trajectory of the human flow has shifted to something more complex, with shifting patterns that sometimes double back unexpectedly. It&