Plough agriculture, in contrast, is associated with private property; marriage tends to be monogamous, to keep the property within the nuclear family; and close family are the preferred marriage partners so as to keep property within the extended family.
Plough agriculture is associated with private property. This was in contrast. Marriage tends to be monogamous, to keep the property within the nuclear family. Close family are the preferred marriage partners. This is to keep property within the extended family.