Native American people almost as tribal, oddly, in European country (7)
I believe the answer is:
'european country' is the definition.
(country in Europe)
'native american people almost as tribal oddly' is the wordplay.
'native american people' becomes 'Crow' (Native American tribe).
'almost' means to remove the last letter (most of the word but not all of it).
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
The alternate letters of 'astribal' are 'atia'.
'crow' with its final letter taken off is 'cro'.
'in' acts as a link.
(Other definitions for croatia that I've seen before include "Republic in SE Europe, capital Zagreb", "Land in South-East Europe", "Country of S. Europe", "European republic, became independent in 1991", "Adriatic country".)