Borders, boundaries, and barriers

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Across
  1. 2. Artificial line
  2. 4. Line
  3. 6. Social divider
  4. 7. Defined space
  5. 8. Human lines
  6. 9. Edge
  7. 10. Physical divider
Down
  1. 1. Obstacle
  2. 3. Nature's form
  3. 5. Straight line