The New World got screwed for chess opening names

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digispin

There are so many named after countries, cities, and last names.

In the United States undisputed is Frank Marshal.

For South America I know of the Rio Gambit and probably others with Njdorf living in Argentina.

As for places in the USA, you can find all sorts of lame names for variants:
https://en.wikipedia.org/wiki/List_of_chess_openings_named_after_places