Urban ecologist homer hoyt's emphasizes the significance of terrain and the importance of transportation routes in the layout of cities.

I believe the answer is: The sector Model

The sector model was popularized in 1939 in order to create concentric zone model of city development. Using this model for building a city would give the city enough space for important infrastructure to be bulit and enough space for outward expansions of the city.

The  frame of government of pennsylvaniawas a constitution for the  province of pennsylvania a  proprittarycoony granted to  william penne by  charles ii of england. the frame of government has lasting historical importance as an important step in the  development of american and world democracy.