Blackbeard would be Somalian IRL according to Oda too....
And Usopp would be from an undisclosed part of Africa according to Oda too...
(Crack theory/conspiracy theory posting intensifies)
But then again I rode the theory of Big Mom being related to Bonney, Shanks being a D from the Film Red logo, Ushimaru being Green Bull and Zoro's father or grandfather or w/e and so on, so I'm pretty sure I'm just gonna take more Ls with these as usual LMAO!
I swear Oda is setting up something HUGE with Kuzan and Teach though. Titantic Pirates and a guy who can easily create icebergs for fun. Blackbeard being unable to sleep and Luffy at Drum Island mentioning people not being able to sleep due the cold. Oars freezing to death in the land/country of villains. All those frozen giants at Punk Hazard. Wapol forming the Black Drum Kingdom of all things.
I'm probably rapidly clutching at straw(hat)s as usual but its fun to theorises/speculate about these things, although its agonising waiting to see them confirmed or deconfirmed instead, with the latter being far more likely with Oda ofc. And much more agonising too lol.