1.Use up land till resources dwindle: nomads
2.Little development of skills, besides ones needed for hunting and gathering.
3.Tribal structure, usually consisting of a few, usually related family units.
4.Emphasis on the "Becoming of Man" ritual instead of other ceremonies i.e. Marriage, birth, and death.
I guess its c They allowed individual families to settle on their own.
C) In a unitary system, the central government has more power than in a federal system.
If you are going to ask multiple choice questions, label them.
