Part of America is a rueful, rebellious continent (7)
I believe the answer is:
eurasia
'continent' is the definition.
(Eurasia is an example)
'part of america is a rueful rebellious' is the wordplay.
'part of' says the answer is hidden in the clue.
'rebellious' says the letters should be written backwards.
'aisarue' can be found hidden inside 'america is a rueful'.
'aisarue' reversed gives 'EURASIA'.
(Other definitions for eurasia that I've seen before include "combination of continents" , "Combined continent" , "large part of world" , "Landmass formed by two continents" , "Continental land mass" .)