He refereed to them as THE RURAL URBAN CONTINUUM.
The major difference between the cities and the villages are the various industries and social infrastructures that are obtainable in the cities and they are the reason many leave rural areas to move to the cities. The people from the villages and those in the cities interact together and they have great impacts on each other, yet differences exist between them as a result of differences in the degree of urbanization of those two locations.
The foot-in-the-door phenomenon refers to the tendency to comply with a large request if one has previously complied with a small request.
C:To trade for furs
That’s the answer