Regex Golf: Regions of Italy vs. States of USA
Perl - 51 36 bytes (for regex)

print&lt;&gt;=~/.A|ise|net|te|z.o|[cp]a|[lr]ia|r[cd]/?"Italy
":"USA
"


Nothing special, but may as well post it, because it's different to other 51 bytes solution.

Or alternatively, shorten my already short solution by 15 bytes. This wins for now, I think.