1. Thomas Alva Edison and His Effects on the United States
... restless spirit, he altered his duplex telegraph and invented the Quadraplex. This was a four-way telegraph that allowed for multiple lines of conversation to be taking place at once (Aldair 39). His invention of the telegraph changed our economics in three ways. One, it allowed for businesses to make more orders and place orders quicker. Two, it eventually led toward the ... ...
- Word Count: 1056
- Approx Pages: 4
- Has Bibliography
- Grade Level: Undergraduate