Answer:
The True Statement is B) Greek city-states were surrounded by walls and originally built for protection.
Explanation:
Options A, C and D are all false. Greek City-States were not formed due to religious reasons but were a natural progression of geography, distance and local communities.
While religion did play an important part, it was not the basis for the development of the city. Hence, early Greece was never a single country in a modern sense and did not have one ruler. There were tens of different city states with their own power base and economy.
While there were economic and social ties among different city states, peace was not the norm. Therefore most of these city-states were protected by strong mud and stone walls.
