Answer :
the answer is an eastward shift of the center of the Muslim world
The period when abbasid took power is still considered as the Golden age of the muslim world.
During this time, the abbasid capital became the center of knowledge and culture in the world and made a lot of scientific contribution to our society.
The period when abbasid took power is still considered as the Golden age of the muslim world.
During this time, the abbasid capital became the center of knowledge and culture in the world and made a lot of scientific contribution to our society.