US Second Industrial Revolution

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US Second Industrial Revolution

  1. 1. The Second Industrial Revolution Inventions and Innovations that changed the world!
  2. 2. Industrial Innovations <ul><li>The Second Industrial Revolution (1865-1900) was ignited through numerous inventions. </li></ul>
  3. 3. Steel <ul><li>The second revolution was spurred by the development of steel. Steel was used to construct: </li></ul><ul><li>heavy machinery </li></ul><ul><li>railroad tracks </li></ul><ul><li>bridges </li></ul><ul><li>skyscrapers </li></ul>
  4. 4. STEEL <ul><li>Steel could be produced as early as the mid-1800’s, but the process was expensive. </li></ul><ul><li>This changed in 1859 when two people (one from Great Britain and one from the U. S.) developed a process (called the Bessemer Process ) </li></ul>
  5. 5. Advantages (Bessemer Process) <ul><li>the railroad industry to replaced their old iron rails with stronger steel rails. </li></ul><ul><li>began to use steel to build buildings and bridges. </li></ul><ul><li>steel’s resistance to rust made it ideal for used in wire and nails. </li></ul>
  6. 6. Railroads <ul><li>When the price of steel was reduced from 100 dollars to 12 dollars a ton by 1873 railroads could lay more track. </li></ul>
  7. 7. Consequences of travel by railroad <ul><li>small towns and communities linked to large population centers </li></ul><ul><li>increase in western settlement </li></ul><ul><li>urban growth increased </li></ul><ul><li>many jobs were produced </li></ul>
  8. 8. Questions to answer… <ul><li>Textbook p. 540-545 </li></ul><ul><li>P. 545 Q.#1, 2 </li></ul><ul><li>This will be collected </li></ul>

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