While most funding for cities and counties is raised through local taxes and fees, what other revenue source makes up about a third of most municipal revenues?

state and federal funds

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.

the answer is d.index