| A | B |
|---|
| Leonardo da Vinci | flying machines, helicopters, machine gun |
| Printing Press | Mass production of books |
| Railroad | Used in mining to transport heavy loads |
| Galileo | Heat Measurement, laws of gravitation, solar system observations |
| Newton | Laws of gravitation, physics, and optics |
| Factory system | Mass production |
| Steam Engine | Changes steam into mechanical energy |
| Cotton gin | Made cotton a profitable industry |
| Machine tools | Possible to produce precision parts for manufacturing |
| Erie Canal | Opened shipping routes between the Great Lakes and Atlantic Ocean |
| Telegraph | Improved long distance communications |
| Transcontinental Railroad | Fast, reliable transportation across the US |
| Suez Canal | Shortened shipping routes between east and west Africa |
| Telephone | Improved communications without coded messages |
| Phonograph | First recording device |
| Radio | Long distance (transatlantic) voice communications |
| Airplane | Greatly improved long distance travel |
| Television | Fast visual communications |
| Computer | Improved processing and control capabilities |
| Geodesic Dome | Lightweight structure with no reinforcing members |
| Transistor | Smaller, lighter electrical device |
| Space exploration | Provided technological advances through research |
| Integrated Circuit | Contains thousands of electronic devices in a small package |
| Facsimile | Transmit documents over phone lines |
| Cellular telephone | Mobile telephone communications |
| Internet | Immediate access to enormous quantities of information |
| Fiber Optics | Fast, frictionless transmission through a glass tube |
| Solar Energy | Converting energy from the sun into electricity |
| Nuclear Energy | Alternative enery source through the splitting of atoms |
| Control of fire | Cooking |
| Hand ax | hunting |
| Bow and Arrow | Hunting |
| Spears | hunting and fishing |
| Animal oil lamps | Lighting |
| Needles | Produce clothing |
| Agriculture | Planned growth of plants and animals for food |
| Bricks | Building materials |
| Irrigation | Planned watering for agricultural crops |
| Wheel | Improved transportation |
| Wooden Ships | Used for trade and transportation |
