Answer:
The house of representatives
Explanation:
I would say that this was a combination of two features: the fact that Greece is mountainous ( I think this is the major reason) so the cities were located in valleys that were not easily accessible from other valleys, and that there were many islands
These both features made communication more difficult and defense easier.
Plantation of tobacco and sugar cane
The suburbs became very popular during the 1950s because of post WWII economic prosperity as well as other factors. American cities were viewed as decaying, there were racial fears that led to a phenomenon called "white flight" of whites moving from cities to the suburbs because of racial fear, and also there was affordable housing to be found in the suburbs that provided more space and luxury for the average American family.