B: his sons ruled different parts of the empire while one khan oversaw all of them.
Explanation:
The Mongol Empire after Genghis Khan died was ruled by the Great Khan who ruled the empire as a whole, while Genghis Khan's sons ruled different parts of it called khanates.
B. Political parties are public and Interest groups are private entities
Explanation:
Political parties work to gain power and run the government, while interest groups are a group of individuals with similar outlook that work together to influence policies
