| A | B |
|---|
| population | total number of people in an area |
| population distribution | the way the population is spread out over an area |
| demography | the science that studies population distribution and change |
| population density | the average number of people per square mile or square kilometer |
| birthrate | the number of live births each year per 1,000 people |
| death rate | the number of deaths each year per 1,000 people |
| migration | the movement of people or region to another |
| immigrant | people who move into one country form another |
| urbanization | the movement of people to cities, and the growth of cities |
| rural | located in the countryside |
| urban | located in cites and towns |
| economy | a system in which people make, exchange, and use things that have value |
| producers | owners and workers |
| consumers | people who buy and use products |
| capitalism | an economic system in which individuals own most businesses |
| communism | an economic system in which the central government owns factories, farms, and offices |
| developed nations | nations with many industries and advanced technology |
| developing nations | nations with few industries and simple technology |
| government | a body that makes and enforces laws |
| state | a region that shares a government |
| dependency | a region that belongs to another state |
| nation-state | a state that is independent of other states |
| city-state | a small city-centered state |
| empire | a state containing several countries |
| constitution | a set of laws that define and often limit a government's power |
