#1 Describe and explain the "Cycle of Empires."

Explanation:

The Five Phase Life Cycle of Empires - a model of the growth and ... the borders of the new empire are well defined and well defended, ... The stage of decline and legacy can be described as the evolution of multi¬-polarity.The Life Cycle of Empires and America's Destiny ... More generally, what are some common features of an empire's culture in its declining period? ... usefully summarizes the former's work) describe developments such as the following.The Life Cycle of Empires and America's Destiny. By Eric V. ... for Survival,” he described a general pattern fitting the history of some fallen empires.

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.