What made islamic empires succesfull

In 751, papermaking from China made its way to the West through Muslims. Trade introduced Islam to the Africans. In the Middle East, the success of Islam changed the culture forever. ... Future states of the region, such as the Safavid, Seljuk, and Ottoman and Mughal Empires, were all "Islamic Empires".

The Islamic Golden Age is traditionally dated from the mid-7th century to the mid-13th century at which Muslim rulers established one of the largest empires in history.

Coins? i think you meant