Crossword Genius

Identical son in populous land where Jakarta lies (9)

Ross

I believe the answer is:

indonesia

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

'where jakarta lies' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.

'identical son in populous land' is the wordplay.
'identical' becomes 'one' (I've seen this in another clue).
'son' becomes 's' (genealogical abbreviation for son).
'in' is an insertion indicator.
'populous land' becomes 'india' (India is an example. I am not sure about the 'populous' bit.).
'one'+'s'='ones'
'ones' put inside 'india' is 'INDONESIA'.

Can you help me to learn more?

(Other definitions for indonesia that I've seen before include "SE Asian country" , "part of Asia" , "An ionised country of South East Asia" , "Asian republic" , "I said none (anag) - country" .)

I've seen this clue in The Telegraph.
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