How did the oligarchs of ancient greece rule?

Oligarchy is the system of Greek government where a group of individuals rule the country.

EXPLANATION:

There were four main system of Greek government and Oligarchy was one of them. Oligarchy came in 400 and gained power in 411 BCE in  Athens. For Greeks, any system that is either not tyranny or monarchy was considered as oligarchy.

Selected group of individuals like few families or businesses used to rule in this form of government. The power was in the hands of a small group of people and they used to their own convenient to rule the democracy.

Oligarchs controlled public places so that people cannot protest and can live only in the countryside.They served as the most common form of government in safeguarding the democracy.

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.