The World/American Greco-Roman Heavyweight Championship and the World/European Greco-Roman Heavyweight Championship was a Greco-Roman professional wrestling championship contested for throughout the continent of Australia, Europe and North America.
The final champion Georg Hackenschmidt defeated American Heavyweight Champion, Tom Jenkins, on May 5, 1905 in New York City, New York to unify both titles and become the undisputed World Heavyweight Champion.
References
World Greco-Roman Heavyweight Championship Wikipedia(Text) CC BY-SA