WA historical landmarks

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Across
  1. 4. In 1962 Seattle hosted this worldwide event
  2. 5. Designed by John Grahm, this structure is an iconic place to visit in the Seattle Supercenter
  3. 7. a historical event for Joe Rantz and the rest of the world as Hitler began scheming
  4. 9. in 1889 this happened ruining the city of Seattle
  5. 10. in 1980 mount st Helens did this
Down
  1. 1. The tallest mountain in Washington
  2. 2. The thickest dam in the country (hint: Joe Rantz worked on it)
  3. 3. The first of these was built in Washington in 1851
  4. 6. During WW2 this company started in Washington to help the war effort
  5. 8. Washington obtained this in 1889