Can you name the country?

Can you name the country?

Inspired, of course, by @AviatorTom:

Can you name a country whose name, in English, contain all five vowels? (Without cheating!)

Updates
1 y
There are actually six:

Democratic Republic of the Congo
Dominican Republic
Republic of Equitorial Guinea
Mozambique
United Kingdom of Great Britain and Northern Ireland
United States of America
Can you name the country?
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