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Birth rate
Population growth
Demographic transition
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Key terms: age population youth bulge population pyramid countries demographic terror png middle east heinsohn africa theory rate social unrest females economic conflict societies gary fuller gunnar heinsohn population growth developed countries youth bulge theory census bureau displays middle east youth factors age structure excel north africa mortality brookings institution policy birth population pyramid showing older dependents fertility age groups periods Search external links cited by footnotes on Wikipedia page Population pyramid: |
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