Which system represents a traditional family structure?
both the father and mother work outside the home to earn income for the family.
the father is the breadwinner and the mother handles household work.
teenage parents care for their children.
both the father and mother share household work equally.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.