You are wrong in so many ways that I don't even know where to begin. I don't believe you when you say you've read a book -- any book -- apart from Harry Potter. You're contradicting yourself even as you make your loud and wrong declarations, like any racist. You're not exercising the most basic fucking reasoning. Here are just a few of your wrongs:
-Have you heard of travel. Are you aware that humans of every race and ethnicity occasionally do this for reasons other than enslavement. Trade. Curiosity. Clout. All the same reasons people travel today.
-Are you judging actual history by the words of people writing (or translating from antiquity) during the most overtly white supremacist era of global history? When there were tremendous incentives to further racist propaganda and terrifying disincentives to write the truth? Why do you believe what those historians say vs modern historians who have DNA and modern research techniques and peer review systems?
-There were so many Black people in England during the Elizabethan era that she tried to deport them. She failed because there were too many.
-Do you think all those people just showed up in Europe during the 1600s and were never there before.
-Do you think the Moors ruled much of Europe for 700 years without fucking any white people, including royalty.
-Are you aware that the Moors (aka Northern Africans) and Subsaharan Africans, like many people who inhabit the same continent, traded with and fucked each other for reasons other than enslavement. You know, having existed since the beginning of human history and all. Don't you racists think that one drop of Black blood makes you Black? What do you call people with a lot more than one drop?
-Did you know Black people come in different skin colors, including pale/white?
-Have you heard of Mansa Musa, Alessandro di Medici, Pope Victor, ancient Rome's policy of sending soldiers from one continent to another, Crusaders bringing their African spouses or children back to Europe, or just... anything that actually happened.
-Have you ever visited a medieval art museum like the Cloisters? Don't answer that, I know you haven't, because of the dumb shit you just said.
-No one in Africa freaks out when they see white people! Jesus Fucking Christ! Books exist! TV and the internet exist! Oral historians like griots have been proven accurate by modern research! A "primitive" lifestyle does not automatically mean ignorant of the world, any more than your technological lifestyle automatically conveys intelligence or erudition! There are fucking Maasai herdsmen who understand more of history than you, clearly!
-Has it ever occurred to you that some people, who aren't as racist and thoughtless as you, are capable of imagining Black people AND dragons at the same time? And that none of us are or should be constrained to writing about purely the places of our origins because diasporas, travel, trade, and imagination exist? And that plenty of us ARE writing about Black characters in Africa, too?
-Octavia E. Butler ALSO wrote about Black people living before and during the slave era as free people, you benighted waste of my time! Did you only manage to read one of her books? Did you just skim it? DID YOU THINK IT WAS HISTORICAL
...deep breath. Yeah, okay.
If you're part of that 80% yourself, you should be ashamed of listening to people who hate you and not using your goddamned head. If you're white, you should be ashamed for thoughtlessly regurgitating propaganda. I'm blocking you because you're not worth an argument. Read better books. Shut the fuck up until you do.