Some lawmakers believe this group has too much power.
a. administrative assistants
c. select committee members
b. congressional staffers
d. library of congress staffers

it is a better alternative

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.