Crossword Genius

There are strong links between its members (5,4)

Ross

I think it could be either:

chain gang

costa rica

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

'there' is the definition.
(I know that Costa Rica is a country)

'are strong links between its members' is the wordplay.
I cannot quite understand how this works, but
'are' could be 'a' (short for 'are', historical unit of measurement) and 'a' is located in the answer.
'strong' could be 'str' (abbreviation for strong) and 'str' is found within the leftover letters.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for costa rica that I've seen before include "Central American republic" , "A Socratic country in Central America, oddly" , "Central American state" , "international team?" , "place in Central America" .)

I've seen this clue in The Globe and Mail and The Irish Independent.
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