The government was called the Fengjian.

'enfeoffment and establishment') was a political ideology and governance system in ancient China, whose social structure formed a decentralized system of confederation-like government based on the ruling class consisting of the Son of Heaven (king) and nobles, and the lower class consisting of commoners categorized

Explanation:

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.