His naturalization declaration of intention is online at Ancestry.com. Indicates he was born in Korlovoc, Austria on 23 August 1886; residing in Biloxi, Mississippi; cannot remember the name of the ship on which he came in April 1900. Dated 20 July 1912.
Karlovac (note spelling) is both a county and a city in today's Croatia:https://en.wikipedia.org/wiki/Karlovac
There are two other Gorsics who arrive in the same timeframe from Karlovac who are bound for Braddock & McKeesport, Pennsylvania.