Muslim traders used which economic development to facilitate currency exchanges, including early forms of checks? ​​​​​​​

Muslim traders used the development of the system of credit and banking to facilitate currency exchanges, including early forms of checks. This was particularly important during the Islamic Golden Age from the 8th to the 14th centuries, when Muslim merchants participated in extensive trade networks spanning from Spain to China. The Islamic financial system was characterized by the prohibition of usury (interest), which led to the development of alternative forms of transactions and credit mechanisms.

One example was the Hawala system, a trust-based informal banking system that allowed for the transfer of funds without physically moving money. In this system, a merchant could deposit money with a trusted broker in one city and receive a code. The recipient of the code in another city could then withdraw an equivalent amount from another trusted broker. This system essentially functioned as an early form of banking, enabling traders to conduct business and make payments without the need for physical currency.

Additionally, Muslim traders also used early forms of checks known as "Sakk" or "Saq". These were documents issued by merchants or bankers as a form of payment, guaranteeing the transfer of funds from one party to another. These checks could be presented at the issuing bank and exchanged for the designated amount of money, allowing for secure and convenient currency exchanges.

Overall, the development of credit and banking systems by Muslim traders during the Islamic Golden Age greatly facilitated currency exchanges and provided efficient means of conducting business across vast trade networks.