Money System
The early Romans developed an early coinage system. Early in Roman economy copper was traded by weight and unmarked lumps across Mediterranean mostly before 3rd century B.C. The Romans changed this because it was a major inconvenience for the lumps to be weighed in order to have them exchanged. The first Roman silver coins were coined around 312 B.C. as the Romans came into contact with the Greek colonies in southern Italy where the existing bronze coinage was of insufficient value to trade with the silver coins used by the Greek. Romans primarily used brass, copper, silver, and gold coins with specific weights size, value, and metal composition. The Roman coins went as far as India and were very commonly used. These are some of the reasons why the Romans had the world's most developed coin systems.