{"type":"rich","version":"1.0","title":"freedommachine wrote","author_name":"freedommachine (npub165…hlmws)","author_url":"https://yabu.me/npub165p26976w6gha5qmfrum550vlvctsvlt66agwv7xaqf06zwhekcsmhlmws","provider_name":"njump","provider_url":"https://yabu.me","html":"The 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.\nThe Roman coinage, including copper-diluted fiat coins, was gradually phased out in favor of gold and silver-based Islamic currency. "}