1. abbot-
  2. abdicate-
  3. absolutism-
  4. Acid rain
  5. the Acropolis-
  6. Slide 6
  7. Slide 7
  8. Slide 8
  9. the Age of Enlightenment-
  10. imperialism-
  11. alloys-
  12. Alluvial Soil
  13. ancestor worship-
  14. assimilation
  15. autonomy—
  16. Autocratic
  17. Balance of Power
  18. baptism—
  19. barter—
  20. biodiversity—
  21. bureaucracy—
  22. Caliph
  23. capital—
  24. Absorption
  25. Aerobic bacteria
  26. Anaerobic bacteria

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