What were the three regions of unit states?

- the United States of America

- Canada

- Mexico

2) South America

- Argentina

- Brazil

- Chile

- Colombia

- Ecuador

- Peru

- Uruguay

- Venezuela

3) Europe

- Andorra

- Austria

- Belarus

- Belgium

- Bosnia and Herzegovina

- Bulgaria

- Croatia

- Czech Republic

- Denmark

- Estonia

- Finland

- France

- Germany

- Greece

- Hungary

- Iceland

- Ireland

- Italy

- Latvia

- Liechtenstein

- Lithuania

- Luxembourg

- Malta

- Moldova

- Monaco

- Montenegro

- Netherlands

- North Macedonia

- Poland

- Portugal

- Romania

- Russia

- San Marino

- Serbia

- Slovakia

- Slovenia

- Spain

- Sweden

- Switzerland

- Turkey

- Ukraine

- United Kingdom

- Vatican City