What were the Assyrians the first to build?
pyramid
roads
aqueduct
temple

the answer is - aqueduct

I was taking a test and roads, like the person above stated, was wrong

answer; deviation iq; //(a)

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.