Example image of eyePlorer eyePlorer map for 'Economy': Consumption (economics) Distribution (economics) Good (economics) Manufacturing Trade Economic system Ecology Geography History Natural resource Social organisation Technological evolution Economic geography Economic history Economics Social sciences Administration (business) Applied science Engineering Finance Management Agent (economics) List of occupations Profession Investment Saving Primary sector of the economy Secondary sector of the economy Tertiary sector of the economy Babylonia City-state Commodity money Debt Sumer Price system Subsistence agriculture Shekel Mesopotamia Barley Currency Metric (mathematics) Herodotus Lydians Coin Ancient Greece Debt bondage Freeholder Scarcity Aristotle Exchange value