In their article, Otterstrom and Earle take an interdisciplinary approach to analyzing the American settlement of the West. What do we learn by mapping population density? What do they conclude about Turner and the closure of the frontier?
In their article, Otterstrom and Earle take an interdisciplinary approach to analyzing the American settlement of the West. What do we learn by mapping population density? What do they conclude about Turner and the closure of the frontier?