The American continent is where diverse cultures and nature coexist.

My dream is to live in the United States of America someday.

The whooping crane is an endangered species, and it is difficult to see its beautiful figure.

The American red wolf is one of the endangered species.

My friend came from American Samoa.

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.