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Númenor was rather Atlantis, with similar architecture like Venice. The númenórean kingdoms (Arnor, Gondor) were similar to Roman Empire, Greece.
Yeah for sure, in Far Rhûn, but Tolkien did not mention it.
Not just Saruman, but Aragorn too.
My list would be:
1. Morgoth in the most First Age.
2. Sauron in the late Second Age.
3. Morgoth in the late First Age.
4. Sauron in Third and First Age.
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