Spain joined and came out (7)
I believe the answer is:
emerged
'came out' is the definition.
('emerge' can be a synonym of 'come out')
'spain joined' is the wordplay.
'spain' becomes 'e' (abbreviation for Espana).
'joined' becomes 'merged' (I've seen this in another clue).
'e'+'merged'='EMERGED'
'and' is the link.
(Other definitions for emerged that I've seen before include "Emanated" , "Came into view or became apparent" , "Came out, became known" , "Came forth" , "Slowly came out" .)