Mongol Empire

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Across
  1. 2. Built to protect China from nomadic invaders
  2. 4. United the Mongol tribes
  3. 8. A group or chain of mountains
  4. 10. A time of peace in the Mongol Empire
  5. 11. Dry, treeless grasslands
  6. 13. A flat and elevated landform
  7. 14. A ruler in some Asian countries
Down
  1. 1. A Mongol emperor of China
  2. 3. An important trade route that connected China to the Middle East
  3. 5. Someone who does not have a permanent home who moves from place to place
  4. 6. An Italian merchant who visited China
  5. 7. Isolated China
  6. 9. A ruling family
  7. 12. A large area of ​​relatively flat land