| A | B |
| missionaries | people who want to spread their religious beliefs |
| drought | long periods of lower than normal precipitation |
| delta | a landform at the mouth of a river created by sediment deposits |
| embargo | placing a limit on trade with another country |
| tariffs | fees a country charges on imports and exports |
| polytheism | the worship of many gods |
| monotheism | the worship of one god |
| export | goods sent out to other countries |
| specialization | concentrating on producing what make best |
| gross domestic product | total value of all goods and services produced in a single year |
| anno domini | in the year of our lord |
| imports | goods brought in from foreign countries |
| subsistence agriculture | growing just enough to meet family needs |
| scarcity | not enough of something |
| command economy | government tells how economics questions will be answered |
| traditional economy | custom and tradition tell how economics questions will be answered |
| market economy | producers and consumers tell how economics questions will be answered |
| equilibrium price | price at which quantity demanded equals quantity supplied |