In the U.S., aim to alter history, etc. (10)

I believe the answer is:

humanities

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

'history etc' is the definition.
I can't judge whether this defines the answer.

'in the u s aim to alter' is the wordplay.
'to alter' is an anagram indicator.
'in'+'the'+'u'+'s'+'aim'='intheusaim'
'intheusaim' anagrammed gives 'HUMANITIES'.

Can you help me to learn more?

(Another definition for humanities that I've seen is " Non-scientific studies".)

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

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