There's always room for discussion, but perhaps these previous topics will answer your inquiry.

• Are any Afrocentrist arguments regarded as plausible?

• What is some of the best evidence that corroborates the Afro-centric view of ancient history?

• Did Africans visit the Americas before Columbus?

• How reliable are theories of European Pre-Columbian Contact with the New World? Which ones (if any) do you subscribe to?

• Is There Any Evidence That Moors Reached The Americas Before Columbus?

• Can anybody elaborate on the Theory that Africans navigated across the Atlantic long before Columbus?

• Is there any truth to claims that Africans arrived in the New World before Columbus' voyages?

• I've heard rumours since my grade 11 history class that the Egyptians crossed the Atlantic and visited North America long before the rise of the Roman civilization. Does anyone have sources confirming this, or is it just a rumour?

• Over on /r/todayilearned there's a big thread right now about coca found in Egyptian tombs as evidence of contact with the Americas. What's actually going on here?

• How did pyramids get built in both America and Egypt if these two societies had no contact?

I also recommend checking out the following two articles

• Haslip‐Viera, Gabriel, Bernard Ortiz de Montellano, and Warren Barbour. "Robbing Native American Cultures: Van Sertima's Afrocentricity and the Olmecs." Current Anthropology 38.3 (1997): 419-441.

• de Montellano, Bernard Ortiz, Gabriel Haslip-Viera, and Warren Barbour. "They were not here before Columbus: Afrocentric Hyperdiffusionism in the 1990s." Ethnohistory (1997): 199-234.