Countries that have literally one island

Many countries have islands, some have one main island and a few small islands whether inhabited or not, some have one main island and one or two tiny islands, but there are some countries that have literally just one island to their name, or perhaps are made up entirely of just one island. Can you name them all?
We're looking for sea islands rather than river islands, or 'metaphorical islands' etc. The names of the islands are given.
For fun, one country is included that used to have an island, but the sea level dropped, re-connecting it to the coast.
This is based on my own research, if there are errors or other answers I've overlooked, tell me! ^_^
Quiz by HelveticaBold
Last updated: September 22, 2016
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First submittedAugust 10, 2016
Times taken118
Average score25.0%
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Countries entirely made up of one island
Formerly known as Pleasant Island
Name means 'The Bearded'
Countries with just one island
Bushrod Island
Republic of the Congo
Unnamed island
Ogurja Ada
Country that used to have an island
Level 71
Aug 10, 2016
Quite a few countries very nearly make it to this list, they either have one or two islands too many like Cyprus, are too vague like Libya, or like Suriname has no islands except for ones in a large inland reservoir, but none come closer than Saint Lucia which otherwise is just one island but has the tiny Maria islands off its southern coast :-)
Level 65
Aug 14, 2016
I liked this quiz, even though I did quite poorly. Now I know my one-island countries, so thanks!
Level 71
Aug 14, 2016
Oh why thank you! ^_^ x