It was hard for Muhammad to find a new leader because he was only one of the religious leaders
At specific points in historical time periods, African Americans were seen merely as work objects. African Americans were seen as 3/4th of a person, a little more a little less. These ideald were not extended to them for others believed they were not "humans" and other unsatisfying terms.
The Mongol Empire lasted only 100 years.
The Mali Empire lasted a little more than 300 years.
The people have the right to overthrow the government is it doesn't protect their rights. This is called being a tyrant government and it is not allowed in the constitution. <span />
