Which of the following is a human-made disaster?

• A. Release of manufactured smallpox
• B. Earthquake
• C. Flood
• D. Natural drought

Answer: (A)

Disasters are classified by cause: natural events versus those caused by human actions or technology. A human-made disaster results from human activities, decisions, or deliberate action. The release of manufactured smallpox fits this because it involves a biological agent created and handled by people, and its release represents harm caused by human action rather than by natural processes. In contrast, earthquakes come from movements of the Earth’s crust, floods arise from weather and hydrological dynamics, and natural droughts stem from long-term climate and rainfall patterns. So the release of manufactured smallpox is the example that best illustrates a human-made disaster.