Ancient African contributions
Africa is a ancient land in the world, it is the beginning of people. When time passes out, many things are disappear, but their contributions to the world, as fresh today as when they pass through their creator' minds, ages ago.
Between A.D.780-A.D.850, Khawarizmi invented algebraic. It can helps people to solve some unknown questions, until now middle schools students are learn it.
In astronomy, they also give lots of contributions to world. Like Eratosthenes measure the distance around the Earth between B.C.276-194. He is the first astronomer that can measure the distance around the Earth in the world. Without measure the distance around the Earth, they also can correctly describe the sun's eclipses and the moon affects ocean tides.
Africa is a ancient land in the world, it is the beginning of people. When time passes out, many things are disappear, but their contributions to the world, as fresh today as when they pass through their creator' minds, ages ago.
Between A.D.780-A.D.850, Khawarizmi invented algebraic. It can helps people to solve some unknown questions, until now middle schools students are learn it.
In astronomy, they also give lots of contributions to world. Like Eratosthenes measure the distance around the Earth between B.C.276-194. He is the first astronomer that can measure the distance around the Earth in the world. Without measure the distance around the Earth, they also can correctly describe the sun's eclipses and the moon affects ocean tides.