River is trailed, diverted and developed (14)

I believe the answer is:

industrialised

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'and developed' is the definition.
I can't tell whether this definition defines the answer.

'river is trailed diverted' is the wordplay.
'river' becomes 'indus' (Indian river).
'diverted' indicates anagramming the letters (each letter get diverted elsewhere).
'is'+'trailed'='istrailed'
'istrailed' with letters rearranged gives 'trialised'.
'indus'+'trialised'='INDUSTRIALISED'

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I've seen this clue in The Daily Express.

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