You can't help me anyway because you know far less than I do.
You don't know what's historically accurate. You don't understand why there was a black community in Rome. You don't know why there was one in 17th century London. But you still think you know better than me bubba.
The fact that you are telling me (someone you don't know) "...you know far less than I do" and "You don't know what's historically accurate" and all the other "you don't know"s, tells everyone everything they need to know about who they're speaking to.
Thank you for confirming my suspicions!