AREAL • E-FREE TRANSLATION.COM • Definition of Areal

... evolution of all economic and social processes, reacting again favorably on density of population and resulting eventually in the greatly increased social group and enlarged territory of the modern civilized state. Hence we may lay down the rule that change in areal relations, both of the individual to his decreasing quota of land, and of the state to its increasing quota of the earth's surface is an important index of social and political evolution. Therefore the rise and decline not only of peoples but of whole civilizations ...

— Influences of Geographic Environment - On the Basis of Ratzel's System of Anthropo-Geography • Ellen Churchill Semple