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Technological Innovations in American Industrialization

May 8, 2025

Heimler's History: Industrialization in America

Introduction

  • Focus on Unit 6 of AP U.S. History Curriculum
  • Theme: Industrialization of America
    • Causes and effects
  • Current video focuses on technology

Changes in Industry (Late 19th Century)

  • Shift from local/regional to global market production
  • Mass production and consumption enabled by technological innovations

Key Technological Innovations

Railroads

  • Crucial for creating a national market
  • Post-Civil War expansion: miles of railroads increased five-fold
  • Supported by federal government
    • Land grants and loan subsidies: 170 million acres granted
  • Four new transcontinental railroads by the end of the century
    • Connections made from Nebraska to California, and other major routes

Steel Production

  • Bessemer Process (1850s)
    • Developed by Henry Bessemer
    • Method: Air blasted through molten iron to produce higher quality steel
    • Result: More and better quality steel production

Access to Natural Resources

  • Coal and oil as primary energy sources
  • Anthracite coal (Western Pennsylvania) key for industry and locomotives
  • Transition from coal to oil, especially for automobiles

Communication Advances

  • Telegraph (Samuel Morse, 1844)
    • Proliferation of telegraph wires
    • Trans-Atlantic cable connected America to Europe
  • Telephone (Alexander Graham Bell, 1876)
    • Foundation of Bell Telephone Company
    • Rapid adoption: 50,000 telephones in use by 1880

Conclusion

  • Overview of technological innovations
  • Encouragement to explore more Unit 6 videos
  • Call to action for subscribers