2. The telephone. The first telephone was invented in 1876 by Alexander Graham Bell. It was a simple device that allowed two people to talk to each other over a distance. The telephone quickly became an essential tool for communication.
3. The light bulb. The first electric light bulb was invented in 1879 by Thomas Edison. It was a major breakthrough that allowed people to light their homes and businesses at night. The light bulb also made it possible to develop new technologies, such as the motion picture projector and the X-ray machine.