Is this a question? It's a problematic question, and a not politically correct, and it is doubtful that there is one answer; one would have to collect all the contributions of both continents, but how would one qualify them? how can we say for sure that one contribution is more important than another?
The reason for this idea is probably that Asia provided a lot of inventions such as compass and its numerous scripts.
But we shouldn't forget Egypt was also a part of Africa, and it provided possibly the world's earliest script and a fully developed numerical system.
