Across
- 6. oil industry
- 7. steel industry
- 8. was invented by Thomas Edison
- 9. materials found naturally
- 11. meat packing industry
- 12. invented the airplane
- 15. automobile industry
Down
- 1. was invented by Henry ford
- 2. availability of work force
- 3. captain of the steel industry
- 4. captain of the railroad
- 5. was invented by Alexander Graham Bell
- 10. invented affordable automobile
- 13. people invented stuff
- 14. captain of the automobile industry