Collocations for developed - adj.

be, seem

highly, strongly, very, well
He has a highly developed sense of humour/humor.

fully
partially
finely
poorly
She was born prematurely with poorly developed lungs.

newly, recently
economically
economically developed countries

overly
an overly developed sense of his own importance

Developed is used with these nouns:
country, economy, nation, region, sense, world