A "divine right" refers to a right that people people has been passed onto them from God, and cannot be interfered with my laws made by humans. These could include "free speech", freedom from tyranny, etc.
There are two different types of muslims: the sunni muslims and the shiite muslims. the source of conflict that these two muslim groups disagree on is the prophet muhammad’s sucession. the shiites believe that the prophet muhammad should have been succeeded by his son-in-law, while the sunnis believe that the leadership of the muslims should be passed down via hereditary succession.
hope this helps! :)
Overestimate one’s capabilities, to be overly confident is harmful