Volunteers covering a little land down under, a province, and an African country (8)
I believe the answer is:
tanzania
'an african country' is the definition.
(country in Africa)
'volunteers covering a little land down under a province' is the wordplay.
'volunteers' becomes 'TA' (abbreviation for Territorial Army).
'covering' says to put letters next to each other (on top of in down clue).
'little land down under' becomes 'NZ' (abbreviation for New Zealand).
'province' becomes 'ni' (short for Northern Ireland, a province of the UK).
'nz'+'a'+'ni'='nzani'
'a' after 'nzani' is 'nzania'.
'ta'+'nzania'='TANZANIA'
'and' is the link.
(Other definitions for tanzania that I've seen before include "East African republic" , "state" , "African country just S. of equator" , "Country of eastern Africa" , "E. African nation" .)