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African beads show 4,000-year-old trade
The recent unearthing of ancient African beads has shed new light on the extensive trading systems that existed some 4,000 years ago. These discoveries have expanded our knowledge of international ...
African origins of farming -- Africa and the age of metals -- African musical instruments and pottery -- African pottery -- African recording and writing systems -- African mathematics, weights and ...
How ancient African terracing systems, validated by the Green Belt Movement, prefigure the 'innovative' principles of space ...
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