There have been an unbelievable number of changes in my lifetime.
The Republic of Dahomey is now Benin
The Republic of Congo is now the Democratic Republic of Congo
Upper Volta is now Burkina Faso
Tanganyika and Zanzibar joined to form Tanzania
Rhodesia is now Zimbabwe
Bechuanaland is now Botswana
East Pakistan became Bangladesh
Ceylon became Sri Lanka
North and South Vietnam became the Socialist Republic of Vietnam
British Honduras is now Belize
Burma is now Myanmar
Aden Colony and Protectorate became South Yemen
North and South Yemen joined to form Yemen
Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgyzstan, Latvia, Lithuania, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan were all formed from the Soviet Union
East and West Germany were reunited to form Germany
Bosnia and Herzegovina, Croatia, Macedonia, Serbia and Montenegro, and Slovenia were formed from Yugoslavia
Kosovo gained independence from Serbia
Great Socialist People’s Libyan Arab Jamahiriya became simply Libya
Swaziland was changed to Eswatini
And there have been many more, not to mention all of the countries that gained independence without changing their names.
There have been an unbelievable number of changes in my lifetime.
The Republic of Dahomey is now Benin
The Republic of Congo is now the Democratic Republic of Congo
Upper Volta is now Burkina Faso
Tanganyika and Zanzibar joined to form Tanzania
Rhodesia is now Zimbabwe
Bechuanaland is now Botswana
East Pakistan became Bangladesh
Ceylon became Sri Lanka
North and South Vietnam became the Socialist Republic of Vietnam
British Honduras is now Belize
Burma is now Myanmar
Aden Colony and Protectorate became South Yemen
North and South Yemen joined to form Yemen
Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgyzstan, Latvia, Lithuania, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan were all formed from the Soviet Union
East and West Germany were reunited to form Germany
Bosnia and Herzegovina, Croatia, Macedonia, Serbia and Montenegro, and Slovenia were formed from Yugoslavia
Kosovo gained independence from Serbia
Great Socialist People’s Libyan Arab Jamahiriya became simply Libya
Swaziland was changed to Eswatini
And there have been many more, not to mention all of the countries that gained independence without changing their names.
https://www.gov.uk/government/publications/country-names/country-name-changes-in-hmg-use-1919-to-2020