THE GEOGRAPHIC BASIS OF HISTORY 885
America, all occupy regions where the climate is of the kind which we have defined as most favorable to the progress of mankind. Much as these nations differ in race, in ideals, and in type of civilization, they all agree in possessing a high degree of will-power and energy, and a capacity for making progress and for dominating other races. Throughout the course of history, similar conditions of climate seem to have prevailed wherever a nation has displayed these qualities. With every throb of the climatic pulse which we have felt in Central Asia, the centre of civilization has moved this way or that. Each throb has sent pain and decay to the lands whose day was done, life and vigor to those whose day was yet to be.