Bella Ouyang WH_D crossword puzzle

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Across
  1. 3. supremacy of oneself’s nation
  2. 5. designed to pass the “no man’s land”
  3. 7. the start of Trench warfare
  4. 10. Germane attacked a ship of the U.S. and drove them into the war
  5. 11. the war happened in 1914-1918 with a massive scale
  6. 12. one of the first war of attrition
  7. 13. Race of military force
  8. 17. where countries united to solve conflicts
  9. 18. unite of countries
  10. 19. gas invention of ww1, can poison lots of enemies
Down
  1. 1. English and France stopped German’s advance on Paris
  2. 2. Russia’s last fought on German’s territory
  3. 4. the outcome German had to pay because of the launch of ww1
  4. 6. war that the economy, politics, population and so on of a country have all involved with a massive scale
  5. 8. scramble or empire
  6. 9. the agreement to stop the war
  7. 13. invention of ww1, advanced gun
  8. 14. the war strategy of consuming the enemy’s supply to achieve success
  9. 15. first battle that uses tanks
  10. 16. Known as “flying aces”