This one's pretty obvious.
United States Of America -
The most well-renowned country in modern day times.
The militaristic superpower, the United States
of America are also known as the bossiest
A Beacon to Others.
Despised by Most Others.
Which Country of the World are You?
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Notice that the quiz was generated by a limey/Aussie/kiwi? The clue is found in the phrasing "the United States are...."
Americans (and more often than not Canadians) refer to the United States in the singular, not the plural. Such has been the case since the first generation after the Civil War.