Answer:
Electric power first saw commercial use in the 1870s.
The excerpt provides an example of the regulating zoning responsibility of the local government. This can be proven with the definition of zoning which is; divide into or assign to zones, in particular. When compared to the example provided the definition seems to fit.
The mountainous topography of the Greek peninsula resulted in the isolation of these two city-states.
Athens developed a system that valued philosophy and active political involvement by its citizens in an early form of democracy. (Note that it wasn't full democracy as we'd think of it today, as those who had a political voice were free men, not women or slaves.)
Sparta developed a militaristic system that valued physical training and military service, as well as a strict loyalty to the state.
Pass the citizenship test, pass a health test