In most of the preindustrial world, the problem of different resourcedistribution was resolved by long-distance trade networks over which the end consumer exercised little control.
Given this unequal resourcedistribution, highland Incas needed access to the products of lower, warmer climatic zones in order to enlarge the variety and quantity of their foodstuffs.
考虑到资源分配的不平等，高原印加人需要获得海拔较低、较温暖的区域的产品，以扩大食物的种类和数量。
3
The map of climate resourcedistribution was made by using GIS.