Inventions

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Across
  1. 2. / Supposedly a substitute to silk
  2. 4. / Works by way of magnetism
  3. 5. / The science behind this invention existed thousands of year before it became an invention
  4. 7. Press / Combined other, similar inventions into a single invention
  5. 9. / The earliest form of this invention was hammered into being
  6. 10. Lines / This invention has sometimes created sociological problems
Down
  1. 1. / Similar inventions before it ran on steam power. This invention ran on gasoline
  2. 3. / This invention began as an analog process, yet over time developed into a digital process
  3. 6. / Developed by the Department of Defense
  4. 8. / Had industrial purposes before being used for transportation