One of the principles of the Nguzu Saba is Collective work and responsibility. Polygamy may only be practiced by the unselfish and the insightful. Collectivism can be practiced by any number of folk who work for a common interest where selfishness could even be the motivating factor. Though i have lived in the country in my polygamous family. Polygamy is some what different in the country than in the city.
Cost of living is different in the country and less expensive than in the city.
The concrete and asphalt makes some of the elements of the life style different. For example, more polygamous families in the cities live in the same house. While in the country, on land, there is more than one house for the sistas to have more of their own space. Most of the polygamists that i know, and i know many, are not in polygamous families for agricultural reasons. In the cities, the family lives in one house.