this is worth reading to better understand the exquisite lie you face: http://historymatters.gmu.edu/d/5478/

I wrote a few articles a while back which explored how even today, white archaologists INSIST that the ONLY way that the pyramids could have been constructed was help from aliens. That massive, sprawling, sophisticated civilizations (including Ethiopia) were impossible prior to colonization. Even today, the level of resistance to the idea that Black civilization- to many an oxymoron- could possibly exist is huge. It's not just an insult, it's a statement about how deeply embedded is the need to deny any and ALL evidence that learning, sophistication and achievement were impossible for those with Black skin. It's worth looking into.