Answer:Emperor Ashoka the Great (sometimes spelt Aśoka) lived from 304 to 232 BCE and was the third ruler of the Indian Mauryan Empire, the largest ever in the Indian subcontinent and one of the world's largest empires at its time. He ruled form 268 BCE to 232 BCE and became a model of kingship in the Buddhist tradition.
Indentured Servants. These were people who worked for a certain number of years to pay for their voyage to America.
Wheres the wrest of the question?
Just compare a river map of West Africa to a map of West African kingdoms.
You can clearly see that all of these kingdoms form around the Niger River.
More support to this: None of these other rivers are even in Africa: The Thames is in England, the Indus is in Pakistan, and the Euphrates runs through the Middle East.