cial-tial

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Across
  1. 3. Relating to money
  2. 5. Made by humans rather than occurring naturally
  3. 7. Relating to a president
  4. 8. Relating to a region or part of a country
  5. 9. Connected with buying, selling or business
  6. 10. Large in size, amount or importance
  7. 13. Enjoying spending time with other people
  8. 14. The first letter of someone's name
  9. 15. Absolutely necessary or very important
  10. 16. Different from ordinary or usual
Down
  1. 1. Approved or recognised by an authority
  2. 2. Having a helpful or positive effect
  3. 4. Extremely important to the success of something
  4. 6. Relating to an area where people live
  5. 11. Information that should not be shared with others
  6. 12. Intended to be kept secret or private