American in the Golden State (4)

I believe the answer is:

inca

I'm a little stuck... Click here to teach me more about this clue!

'american' is the definition.
(I know that Inca is a type of Kechua)

'in the golden state' is the wordplay.
'the golden state' becomes 'ca' (abbreviation for California. I am not sure about the 'golden' bit.).
'in'+'ca'='INCA'

Can you help me to learn more?

(Other definitions for inca that I've seen before include "Old Peruvian people" , "Pyramid builders" , "Member of ancient Peruvian tribe" , "Pre-conquest Andean" , "Andean culture" .)

I've seen this clue in The Everyman puzzle in The Observer.

Want a hint initially instead of a full solution? Install my app