rich1.0freedommachine (npub165…hlmws)https://yabu.me/npub165p26976w6gha5qmfrum550vlvctsvlt66agwv7xaqf06zwhekcsmhlmwsnjumphttps://yabu.meThe mediterranilean societis did that. When Mediterranean societies came under Islamic rule in the 7th century, significant changes occurred in their monetary systems. The Umayyad Caliph Abd al-Malik (685–705) introduced reforms that replaced the earlier Byzantine-Roman coinage with purely Islamic coins, such as the gold dinar and silver dirham. The Roman coinage, including copper-diluted fiat coins, was gradually phased out in favor of gold and silver-based Islamic currency.