Figure 8.30 The agricultural impact on the forest cover of central Europe from 900 to 1900 c.e. Extensive clearing of the forests, mostly before 1350, was tied largely to expansion of farmland. The distribution of forests in 1900 closely resembles that of hills and mountain ranges. Why might this pattern have developed? (Source: Redrawn from Darby, 1956, pp. 202-203.)