According to peter heather, a historian at king's college london, during the roman empire, the german tribes east of the rhine river produced no coins of their own but used roman coins instead: "although no coinage was produced in germania, roman coins were in plentiful circulation and could easily have provided a medium of exchange (already in the first century, tacitus tells us, germani of the rhine region were using good-quality roman silver coins for this purpose)." source: peter heather, the fall of the roman empire:

a new history of rome and the barbarians, new york: oxford university press, 2006, p. 89. when sellers are willing to accept money in exchange for goods and services, money is acting as a a. medium of exchange.
b. standard of deferred payments.
c. unit of account.
d. store of value. if some of the roman coins had been taken to germania, then the coins could have been a medium of exchange in germania if people began to consider it safe and would have accepted it for payments.

if coins could have been easily used to purchase goods and services in other areas, the coins would also have some intrinsic value. a. true b. false