The idea that the population of a city or town will be inversely proportional to its rank in the hierarchy.

A series of links connecting the many places of production and distribution of an item that is exchanged on the world market.

Also known as slash and burn agriculture. People clear forests of vegetation by cutting and burning.

An area of economic production that is located inland and is connected to the world by a port.

Refers to the social and psychological effects of living in a world in which the movement of goods and information has increased rapidly.

A country's largest city - ranking atop the urban hierarchy - most expressive of the nations culture.

The encroachment of desert conditions on moister zones along the desert margins.

Self-sufficient agriculture that is small scale and low technology and emphasizes food production for local consumption.

Attempt to explain the locational pattern of an economic activity and the manner in which its producing areas are interrelated.

The businesses that provide the vast majority of goods and services that support the agriculture industry.

A design that calls for development, urban revitalization, and suburban reform that will create walkable neighborhoods.

Terms used to describe the zones in northern Mexico with factories supplying manufactured goods to the U.S. market.

A model that explains the location of agricultural activities in a commercial, profit-making economy. Allocates farming activities into rings surrounding a central market city.

The effects of distance on the interaction, generally the greater the distance the less interaction.

Crops that carry new traits that have been inserted through advanced engineering methods.

The rehabilitation of of deteriorated, often abandoned, housing of low-income inner city residents.

A program that provides small loans to poor people, especially women, to encourage development of small businesses.

Economic activity concerned with the direct extraction of natural resources from the environment.

The process through which something is given monetary value.

Region of great cities located between the Tigris and Euphrates Rivers - the first urban hearth - dating to 3500 BCE.

Theory proposed by Walter Christaller that explains where places should be functionally and spatially distributed with respect to one another.

Theory originated by Immanuel Wallerstein and has a three-tier structure, proposing social change in the developing world, which is linked to the economic activities of the developed world.

Economic activity associated with the provision of services - such as transportation and banking.

Ownership of the same firm of a number of companies that exist at the same point on the commodity chain.

The total value of all goods and services produced within a country during a given year.