Why has the industrial geography of Northwest Arkansas change in the past 20 years?

Geography has played an important and continuing role in the history and ... Also, climate varies across the state as a result of changes in latitude, ... It includes such cities as the Fayetteville–Springdale–Rogers ... Much of the surface of this region has been created within the last several thousand years.  The considerable sprawl that has accompanied the growth in northwest Arkansas in the past three decades (causing land to be cleared for housing and for commercial and industrial growth) also brings air and solid waste pollution.