Answer:
C. Gupta
Explanation:
It was developed by a mathematician in 498 CE :)
The Indians of the western grasslands were different. They refused to give up their way of life. These plains Indians were always on the move, because they hunted buffalo -- the American bison. They followed great groups of the animals across the grassy plains. At that time, there were millions of these animals in the American west.
The Indians of the plains depended on the buffalo for almost everything they needed. Many of them were fierce fighters. The plains Indians did not want white men crossing their hunting lands.
The Magyars, the Vikings, and Muslims
