Strong development in the west and south (5)
I believe the answer is:
thews
'strong development' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'the west and south' is the wordplay.
'west' becomes 'W' (abbreviation).
'and' is a charade indicator (letters next to each other).
'south' becomes 's' (abbreviation).
'the'+'w'+'s'='THEWS'
'in' is the link.
Can you help me to learn more?
(Other definitions for thews that I've seen before include "Muscle, strength (literary)" , "Well-developed muscles" , "Strong muscles" .)