Civilization V: Who/What Am I?

Thanks! I have an idea for an answer, I just need to think up a clue...
 
Nine don't exist, three aren't mine, two more come before their time. Who, or what, am I?
 
The Aztecs cities?
 
None of the above... Clue 2: Some may seem like nothing out of the ordinary, but are truly the product of ignorance.
 
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