Chinese Dynasties and Nomads

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Across
  1. 4. helped expand printing
  2. 6. Bone-hard, white ceramic made of a special clay and a mineral found only in China
  3. 8. First emperor of the Sui Dynasty
  4. 9. Floating magnetized needle that always points north-south
  5. 11. strong foundation for the great achievements of the next dynasty
  6. 12. Clock in which machinery regulated the movements
  7. 13. dynasty that lasted from 581 to 618
  8. 14. Paper currency issued by Song government to replace cumbersome strings of metal cash used by merchants
  9. 15. general who reunited china and proclaimed himself the first song emperor
Down
  1. 1. one block on which a whole page is cut
  2. 2. led to the development of weapons such as an ancient rocket launcher
  3. 3. Made from mixture of saltpeter, sulfur, and charcoal
  4. 5. Man who restored china to its glory
  5. 7. dynasty that lasted from 960 to 1279
  6. 8. Ruler during the campaign in Korea
  7. 10. allowed sailors to calculate true north and use that information to navigate