is one way to explain how services are distributed and why a regular pattern of settlements exists, at least in developed countries such as the United States.

Central place theory

Explanation:

Central place theory is one way to explain how services are distributed and why a regular pattern of settlements exists, at least in developed countries such as the United States.

Central place theory was developed by Walter Christaller(1933) as an attempt to explain the spatial arrangement , size, number of settlements and patterns behind cities and towns by examining and defining the functions of the settlement  structure and the size of the surrounding. Walter Christaller found that it is possible to model the pattern of settlement locations using geometric shape, to do this, he developed three two-dimensional geometric models of the economic landscape, he arranged these model relative to transport, marketing and administrative principle

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.