The old name of the Oslo is
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Christina
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Seoul
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Felon
-
Myanmar
A
Correct answer
Explanation
Oslo was formerly known as Christiania (from 1624 to 1877) and then Kristiania (1877 to 1925). The option 'Christina' appears to be a misspelling of Christiania. The name changed to Oslo in 1925. Seoul, Felon, and Myanmar are unrelated to Oslo's history.