Thus one African country identifies an inhabitant of another (6)
I believe the answer is:
somali
'an inhabitant of another' is the definition.
I can't tell whether this defines the answer.
'thus one african country' is the wordplay.
'thus' becomes 'so' (synonyms).
'one african country' becomes 'mali' (country in Africa).
'so'+'mali'='SOMALI'
'identifies' acts as a link.
(Other definitions for somali that I've seen before include "Eg, native of Mogadishu" , "African language" , "Native of East African state" , "East African national" , "1 [GCSE]" .)