Psychology helps us to deepen our
understanding of each other, our world,
and:

well its is frequent rain

have a good day

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.

answer; dr.black,who allows only certain individuals to mate;