Roaring twenties

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Across
  1. 1. invented the assembly line
  2. 6. early communication device
  3. 8. provides money for retired or crippled people
  4. 11. a modern day car
  5. 12. flew from New York to Paris
  6. 14. invented the first sustainable airplane
Down
  1. 1. father of radio
  2. 2. issued the "bank holiday"
  3. 3. caused by people withdrawing there money really fast
  4. 4. flew across the Atlantic alone
  5. 5. improved version of telegraph
  6. 7. prohibition
  7. 9. a place to store and earn interest
  8. 10. was a relief if Belgium organizer
  9. 13. started spending on schools and parks