The ancient Egyptians used levers in building the pyramids. Although it is not known exactly how they erected the great obelisks, it's a pretty sure bet that they used levers in some way.
The tallest building in Africa is a massive 400-metre-high (1,300ft) skyscraper with 77 floors, and it was built at the heart of a new city. The Iconic Tower in the New Administrative Capital of Egypt ...