The best crossword puzzle

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Across
  1. 4. Agriculture
  2. 5. Development Index
  3. 9. Nation
  4. 10. Developed Nation
Down
  1. 1. Agriculture
  2. 2. Rate
  3. 3. Economy
  4. 6. Domestic Product
  5. 7. Capita Income
  6. 8. Industrialized Nation