The most relevant source for politicians debating whether to reduce the size of the military is a .
a. textbook detailing the history of military sizes.
b. newspaper using paid information about the proposal.
c. report on a government website analyzing the idea.
d. defense-contractor blog promoting the military.

Explanation:

d·defense-contractor blog promoting the military .

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.