When you cross the International Date Line, the date changes by one day.

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.

My company has introduced a layoff system.