Final answer:
Charlemagne's system of coinage utilized silver predominantly from European sources, not the Americas, as the latter's silver was not available during his reign. The Americas' silver influenced European economies only after the discovery and subsequent exploitation of New World mines, which occurred well after Charlemagne's time.
Step-by-step explanation:
The silver that Charlemagne is credited with using to establish a system of coinage did not come from the silver mines in the Americas as they did not exist during his reign.
While it is true that the inundation of silver from the Americas in later centuries, specifically from 1503 to 1650, had a significant impact on European coinage and economies—leading to the Price Revolution—this does not pertain to Charlemagne's period. His reign ended in 814, long before the discovery of the Americas. The silver used during Charlemagne's time would have likely come from sources within Europe or the surrounding regions that were accessible to his empire, such as those in Saxony or the lands conquered by the Islamic caliphates where coins were minted in abundance following their standardized systems.
Furthermore, Charlemagne aimed to improve the state of education and literacy in his empire by gathering scholars and promoting the Carolingian Renaissance, separate from his efforts in coinage and monetary systems.