The middle ages in Africa were a time of many contributions and advances to influence the world in modern day. They built fantastic pyramids Which were so amazing people still travel to see them. They also built amazing boats to fish used to fish and sail. They were the first people to sail to South america before Europe. They made many surgical tools to set broken bones, brain surgery and limb traction. They also were the first to use saicylic acid for pain medicene. this is still used in asprine today. The africans also made many tools like chisels, saws, copper, and iron tools. Another thing they did was they invented the baffle. It was used to lift obelisk. they also plotted correctly ploted the orbit of the sirus star. They had the first number system but it was based of 20 not 10. The Africans had many more achievements And controbutions.