Resource task 1 tech

  • 2000 BCE

    Fallen trees

  • 2000 BCE

    Wood planks

  • 1380 BCE

    Clapper

  • 1220 BCE

    Vine bridges

  • 600

    Tiber bridges

  • 1570

    Truss bridge

  • Suspension bridges

  • Viaduct bridge

  • Cantilever bridge

  • Cable stay bridge