What is the value of having a longitude and latitude system in the world?

answer; /// the only one of the above that makes good sense is ( the poor,plz check luck

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.