What type of rock looks like a bunch of seashells cemented together and explain what rock it is and how its formed

answer; /// i believe the correct answer is general act charters;

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.

what are the statements.?

answer; the candidate for vice president;