A city in Tanganyika, doesn't matter which (3)

I believe the answer is:

any

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'in tanganyika doesn't matter which' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?

'a city' is the wordplay.
'city' becomes 'ny' (short for New York).
'a'+'ny'='ANY'

Can you help me to learn more?

(Other definitions for any that I've seen before include "A lot < ? Not a lot < -- some" , "Long-running Radio 4 discussion show" , "At all; in some degree" , "Several" , "Some; none in particular" .)

I've seen this clue in The Guardian.

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