Answer:
In the case of a man who goes to town to work and leave his family in the village, the main effect is the power changing, as the need to provide themselves through another way. And in the case of a total group migration, a whole new structure must be developed, sometimes from scratch, but especially that other family members would work too, also several other points.
Explanation:
Now, let's understand better.
In small villages, the traditional patriarchy is common. So, man has the power, and the rest of the family would obey. He is the provider, and all that comes with it. Well, when he decides to go out and look for a job in another town, the family structure must be reorganized. The mother now is the central power, and the children must help to support the family. The money sent by the father sometimes is not enough, so other members of the family must work or do something to complete the sum. Somehow, even with the power change, the family structure, and it's traditional duties maintain itself almost intact.
Now, when the entire familiar group decides to move to another town, depending on the town, if it's small or not, a whole new structure is necessary. Here, there's no patriarchy because it's not possible to a central power when both members of a family have to work. Yes, in this case, father and mother must to work because the wages, in several cases, are not enough, so they have to complete the sum and pay the debts. Children must go to school, creating a new reality for them. In some cases, one of the children must work too to help the parents (and to provide for himself/herself too). Moving to another town is a big reorganization.