It is basic information that culture appear to have different types of a family system. In the United States and Canada and the nations of northern Europe the nuclear family, father, mother and the kids, seems to prevail. In other parts of the world, extended family members along with the father, mother, kids, and grandparents, are thought as family. The twentieth century has seen the best change in history of family change. Family types in North America and northern Europe have been changing with the expansion of nuclear families and the decrease of extended families, and in the previous 20 or more years, with the increase of unmarried families, separated families, single mothers, and same sex families. Nuclear families have been expanding
