The diagram below shows that the Roman Republic contributed to the development of democratic principles.

A diagram showing two boxes with an arrow pointing from the first box to the second box. The first box is labeled 'The Eight Judges,' and the second box is labeled with a question mark.

What is true about the coins, shells, hides, and beads that have been used over time as currency? a.) they were usually found on island countries rather than in mainland-based countries. b.) they allowed the religious leaders to gain more wealth than their followers. c.) they were items of worth to the societies that used them. d.) they were always used by peasants rather than by the upper class.