<a href="http:&#x2F;&#x2F;www.monetary.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.monetary.org&#x2F;</a><p>From the site above, and the related book, i got the impression that Rome didn&#x27;t get into monetary issues until they started using gold and silver for foreign trade.<p>Internally they used &quot;worthless&quot; metals with few problems for generations, in large part because the &quot;worthlessness&quot; made them durable tokens rather than metals to hoard.<p>Meaning that they acted as an accounting system without a third party.<p><a href="http:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;stevekeen&#x2F;2015&#x2F;02&#x2F;28&#x2F;what-is-money-and-how-is-it-created&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;stevekeen&#x2F;2015&#x2F;02&#x2F;28&#x2F;what-is-mon...</a>