geography's your friend. Use it.
No white boy I know geography quite well. But I also know history. Something you obviously don't. So here is some summer reading for your ignorant ass.
This is by a white man named Robert Bauval. It basically describes in more detail what I said in my last post.
The Ancient Egyptians are descended from a group of black Africans that originally came from the south (below what is the present day Sahara Desert). These black Africans moved into North Africa 10,000 years ago after climate change changed the bone dry Sahara Desert into a lush green Savannah with gigantic lakes, hippos, giraffes, and other large African animals. There are rock paintings in modern day Algeria describing this. It also shows the people who made those drawings looking like modern day Africans. Very tall and thin with long limbs and dark skin. Similar to modern day Masai and Somalians.
Then about 7,000 years ago the climate in North Africa changed rapidly again. The lush green Savannah in North Africa turned into the harsh Sahara Desert we see today. This forced the people who lived in Sahara to move. Some went back south. Others went to the Nile Valley which was still green. It was the confluence of all these black Africans in the Nile Valley because of climate change that spurred the rise of Ancient Egypt as a civilization.
If you want to be educated I would recommend reading that book.