The function of the president's cabinet is to a. advise the states on policy matters. b. advise the president. c. interpret the constitution. d. advise the first lady.

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.