Crossword Genius

Booted out rival here and there in ancient region (7)

Ross

I believe the answer is:

boeotia

I'm a little stuck... Click here to teach me more about this clue!

'region' is the definition.
(Boeotia is an example)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

I've seen this clue in The Telegraph.
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