Was the culture maritime? Did the culture have their own practice or nearby examples of fermentation? Is there some specific or difficult part of the process th

Was the culture maritime? Did the culture have their own practice or nearby examples of fermentation? Is there some specific or difficult part of the process that is unique? Does fish fermentation occur in areas with no ties to Southeast Asia or the Mediterranean? I would want to answer these questions before speculating on any possible links. [Disclaimer] I did just this sort of thing researching the possible gold links between Schliemann's Troy and the Royal Graves at Ur as a student...