The Federal Republic of Yugoslavia was once an existing nation.

The Democratic Republic of the Congo is located in the central part of the African continent.

My friend came from the Federal Republic of Nigeria.

The Republic of the Union of Myanmar is located in Southeast Asia.

The Republic of the Marshall Islands is located in the Pacific Ocean.

The People's Republic of Albania was once a socialist country.

My friend came from the Republic of Côte d'Ivoire.

My friend came from the Republic of South Sudan.

The Syrian Arab Republic is located in the Middle East.

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