A．How the survival skills of the early people influenced their diets.B．This need to learn how to save money;C．The increasingly complex relationship between values and the use of money.D．The difficulty of trading larger and larger amounts of goo
A．How the survival skills of the early people influenced their diets.
B．This need to learn how to save money;
C．The increasingly complex relationship between values and the use of money.
D．The difficulty of trading larger and larger amounts of goo