Why was the song dynasty’s shift to paper currency an improvement over coin currency?

Paper currency or banknotes are pieces of paper that carry a payment promise for the currency written on them and which is payable to the bearer on demand. At the beginning, banknotes were issued by commercial banks that backed their value by holding reserves of gold and silver coins. Nowadays, its value is fiduciary, it is not backed by any physical good of the same value.

The development of paper currency by Song's dinasty meant a considerable improvement from merchants and traders at those times. Paper money was much easier to transport if compared to coins, both in terms of size and weight. Merchants could travel for a longer time carrying their profits with them on the way and became more efficient in their businesses.

the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.