Sudan Is the Most cultural country in Africa have more than twice pyramid than Egypt. Due to lack of resources and Fund most of these Pyramid Remain untouched.
According To history Egyptian Pharoas Conquared Sudan around 3100BC- 2890BCand they built fort, Temple there. But when Egypt empires fall down then Sudan Is free around 1100BC and a New Nubian Empire called Kush is dominated here, this empire follow the all culture of Egypt and they built lots of Pyramid here.
Soleb Temple.
The Black Pharao AmenhotepIII build Temple of Soleb accross the West bank Nile River for Supreme God Amun.
These Black Pharao Build Many Pyramids in Meroe City across East bank of River Nile. More than 200 Pyramid are there.
More Information:
Source:
https://www.google.co.in/amp/www.independent.co.uk/travel/africa/sudan-pyramids-twice-the-number-of-egypt-meroe-soleb-prudhoe-lions-tours-a7579141.html%3Famp
http://www.bbc.com/news/world-africa-40420910