causation

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Across
  1. 2. Which magazine annually publishes a 'Person of the Year' issue?
  2. 4. Greek athletic competition that started in 776 BC
  3. 5. What word for a native of an Italian city is also a type of ice-cream with three flavours?
  4. 7. Bono and the Edge are both members of what Irish rock group?
  5. 8. What was the main cause of the Great Depression?
  6. 9. Buenos Aires is the capital city of which country?
Down
  1. 1. Most populated state in the USA
  2. 3. Who discovered the laws of gravity?
  3. 6. What is the family name of the writer who was the author of the classic novel “Pride and Prejudice”?