The American City Beautiful movement, which took off in the second-half of the nineteenth century was primarily concerned with imposing order on the chaotic urban sprawl. The population of American cities had grown dramatically in recent years and many urban planners wanted to rectify the problems they identified with urban layout. The primary motivation was to make cities more orderly.

“New urbanism” emphasizes sustainable urban growth and community development in urban areas. Proponents of “new urbanism” decry the negative effects of suburbanization on the environment and on human society and seek to create urban environments that are more friendlier to pedestrians, less dependent on cars, and that promote greater community interaction.

A metropolitan statistical area has a population of at least 50,000. If the population of an area is between 10,000 and 50,000, then the area is technically a micropolitan statistical area instead of a metropolitan statistical area.

The term “edge city” is a relatively new term in the parlance of American urban geography. It refers to a type of city that has arisen very recently in a comparatively short space of time. The city exists on the fringes of a larger city and acts as a regional hub for recreation, business, or other commercial activity for the suburban population of the larger city.

"Swidden" or "slash-and-burn" agriculture is a form of subsistence farming practiced all over the world, although it is most widely found in tropical regions such as Amazonia. One of the oldest forms of agriculture, swidden involves clearing the forestation and growth in a desired field with axes, then burning the stumps to eliminate obstructions and enhance the soil. This practice has harmful effects of rainforests in which it is practiced and does not produce high yield for its farmers, causing ecological and economic problems.

Corn is the only subsistence crop of the presented options. Tobacco, cotton, and rice are all high intensive plantation crops. Tobacco, cotton, rubber, and papyrus are also not edible, therefore disqualifying them from being considered subsistence crops.

Subsistence agriculture involves food production mainly for the family. A farmer will grow most everything that the family would consume, and anything leftover will go to the local community rather than to a big market.

By definition, a subsistence crop is a crop that is grown primarily for the purpose of feeding/sustaining farmers and their families, with any surplus going towards trade. Of the following answer choices, rice is the only one that can be characterized as a subsistence crop, as rice is a staple food in many agricultural regions. 

A "cash crop" is an agricultural crop that is purposely made strictly to be sold in a market environment for as much money as possible. Most cash crops, which include cotton, opium, grains, and many other products, are grown in a monoculture environment, where they are the only product grown on a piece of land. By their nature, cash crops are not a form of subsistence farming, as they are always produced to be used beyond a grower's own home and family.

When farmers grow a few lucrative crops, they cash cropping. Cash cropping involves growing one or a few crops that can be sold for a relatively high price.