a short history of the changing fiamily

 like the community the family is  a social institution.long ago ,human being lived in loosely related groups.Each group had a common ancestor ( a family member from the distant past).But for ever a millennium ( a thousand years).there have been two main types of families in the world .: the extended form and the nuclear form.the extended family may include grandparents ,patents.and children ( and some times aunts . uncles . and cousins)- in other words ,relatives living  in the same house or close together on the same street or in the same area. In contrast , the nuclear family consists of only parents and their biological or adopted children.because of the industrialization in the nineteenth century ,the nuclear family became the most common family structure