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Q:

The World Health Organization (WHO) and the UN's postal agency have released a commemorative postage stamp on 9 May to commemorate which anniversary of the eradication of smallpox?

  • 1
    30th
  • 2
    40th
  • 3
    20th
  • 4
    10th
  • Show Answer
  • Workspace

Answer : 2. "40th"

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