Democratic socialism is a political theory that aims for a fair society.

Ethnic socialism is known as a synonym for Nazism.

Japan has introduced an import quota system to protect domestic industries.

The discussion about the regional system in Japan is not over yet.

Absolute monarchy refers to a political system where all the power of a nation is concentrated in one monarch.

When my stomach hurts, I always take an antacid.

The United Kingdom is a constitutional monarchy.

Her family adopts a matriarchy.

Oligarchy is a political system where a few powerful people rule the country.

Proportional representation is an important system to ensure the fairness of elections.