He ate one apple.

I reserved a single room.

He is recognized as the head of state of that country.

He was terrified of living in a police state.

Singapore is a prosperous city state.

He has a strong belief in nationalism.

He is working as a member of the gendarmerie.

Japan is a constitutional state, and all people are equal under the law.

He acted according to my instructions one by one.

The motto of this team is 'one for all, all for one'.