What Is Geography?
Geography is the spatial study of the earth's surface (from the Greek geo, which means “Earth,” and graphein, which means “to write”). Geographers study the earth's physical characteristics, its inhabitants and cultures, phenomena such as climate, and the earth's place within the universe.
When one group or individual controls all three powers abuse of power arises, bringing a decline in the rights and liberties of the citizens. Only true Democracy, through the appropriate implementation of the separation of powers represents a guarantee of said liberties for the citizens. In this way, no power or institution becomes more important than the others.
B. and E. marked the downfall of the Inca empire, for obvious reasons. Disease and civil war would obviously kill the empire, and taking an important leader would also mark great chaos within the empire. A. and C. are not to be ignored however, considering that maintaining peaceful relationships with the Spaniards only brought death and chaos to the Aztecs, all from the Spaniards.