African country volunteers before article by Scot (9)

I believe the answer is:

tanzanian

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'african' is the definition.
(Tanzanian is an example)

'country volunteers before article by scot' is the wordplay.
'country' becomes 'nz' (abbreviation for New Zealand).
'volunteers' becomes 'TA' (abbreviation for Territorial Army).
'before' says to put letters next to each other.
'article' becomes 'an' (indefinite article).
'by scot' becomes 'ian' (I am not sure about the 'by' bit.).
'nz' put after 'ta' is 'tanz'.
'tanz'+'an'+'ian'='TANZANIAN'

Can you help me to learn more?

(Other definitions for tanzanian that I've seen before include "Eg, Dodoma native" , "One from Dar es Salaam" , "Native of Dar es Salaam" , "Native of East African country" .)

I've seen this clue in The Daily Express.

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