An Oligarchy is a small group of people having control of a country, organization, or institution. There are different types of Oligarchy and they include:
Aristocracy: the highest class in a certain society, especially those holding hereditary titles or offices, control the government/country.
Plutocracy: A government or country controlled by the wealthy
Military Junta: a military committee; small groups of military leaders take power over a government, or country
An Oligarchy government may sound like a thing of the past but there are still places in the world that have this type of government. These countries include:
Russia
China
Sudi Arabia
Iran
South Africa
Turkey
Afganistan
In history there are countries that are famous for having this type of government. Those places include: