What is the Abbasid caliphate credited with?

the city of baghdad

Explanation:

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 vibration from the sound waves messed with the glass and it shattered.

hope this .