Yamatokoku is one of the ancient states of Japan, also written as Yamataikoku.

The Democratic Republic of São Tomé and Príncipe is an island country in Africa.

The Federative Republic of Brazil is located in South America.

The Islamic Republic of Iran is a country in the Middle East.

The Federal Republic of Somalia is located in the eastern part of Africa.

The People's Republic of Bangladesh is located in South Asia.

The Luhansk People's Republic is located in the eastern part of Ukraine.

The Donetsk People's Republic is located in the eastern part of Ukraine.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

The People's Democratic Republic of Yemen was once an existing country.