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The affluence of many native peoples in the Pacific Northwest led to a practicecalled ____ in which a person would periodically give away wealth. ' 1) Black Friday 2) Door latch ) 3) Door prize v(®) 4) Potlatch Question 8 0.25 / 0.25 points Which formidable barrier appeared about 5000 years ago in Africa that separated inner from outer Africa at the time the rest of Afro-Eurasia was entering Bronze Age transformations? 1) The Nile River ' 2) The Kalahari Desert v/(®) 3) The Sahara Desert ) 4) The Niger River Question 9 0.25 / 0.25 points Mayan cities were... ) 1) Residential ) 2) Commuter v(®) 3) Ceremonial ) 4) None of the above