Twisted curses help create such dead zones in America? (10)

I believe the answer is:

sepulchers

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'such dead zones in america?' is the definition.
I can't judge whether this definition defines the answer.

'twisted curses help' is the wordplay.
'twisted' indicates an anagram.
'curses'+'help'='curseshelp'
'curseshelp' anagrammed gives 'SEPULCHERS'.

'create' acts as a link.

Can you help me to learn more?

I've seen this clue in The Irish Times.

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