The writing on the wall

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Across
  1. 3. A piece of land located in a bay
  2. 7. A city with a red bridge
  3. 9. The study of past events
  4. 13. A city in San Francisco
  5. 15. Friendship or fellowship
  6. 16. Someone who comes to a new country looking for a better life
  7. 19. A country in north america
Down
  1. 1. A boat where immigrants travel
  2. 2. A state on the west coast
  3. 4. A mark or character
  4. 5. A institution where people are held in detention
  5. 6. Where inmates are kept
  6. 8. When something is engraved into the wall
  7. 10. A country in Asia
  8. 11. A piece of writing
  9. 12. A body of water partly surrounded by water
  10. 14. How humans communicate
  11. 17. A place with historical artifacts
  12. 18. A continent connected to Europe