History crossword puzzle

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Across
  1. 4. time, baseball
  2. 7. song leader
  3. 8. Heinz, ketchup
  4. 9. the economy, tariffs
  5. 11. railroad
  6. 12. of power, electricity
  7. 15. phonograph
  8. 16. Morgan, finance
  9. 17. preacher
Down
  1. 1. oil
  2. 2. steel
  3. 3. McKinley
  4. 5. Darwin
  5. 6. paper, mass media
  6. 10. spoil system
  7. 13. president, Harrison
  8. 14. telephone