China, officially known as the People's Republic of China, is the most populous country in the world with over 1.4 billion inhabitants.

South Korea, officially known as the Republic of Korea, is a country located on the southern part of the Korean Peninsula.

India is the second-most populous country in the world.

Bosnia and Herzegovina is a country in Southeast Europe, located on the Balkan Peninsula.

The United States of America is a country primarily located in North America, consisting of 50 states, a federal district, and five territories.