Theof communication is more important than the quantity.

Quality

Explanation:

It is not how long a communication takes, what matters is the purpose

i'll just take the points xd

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.