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The exchange of epistolary letters arose in ancient Egypt in the 25th century before Cristo. Letter exchange is a written and lasting communication between two people through paper letters, where information, thoughts and emotions are shared.The exchange of letters helped maintain and strengthen communication over distances, facilitated the debate of ideas between intellectuals and politicians, and served as a form of artistic and literary expression.The Greeks invented the exchange of letters -
Printing is a method of reproducing text and images on paper or other materials, invented by Johannes Gutenberg in Mainz, Germany, around 1450.Printing is a mechanism for reproducing text and images on a large scale by applying ink to a material, such as paper or fabric. -
The telephone was patented by Alexander Graham Bell in 1876.The telephone is a telecommunication device for transmitting sounds over a distance using electrical signals.The function of a telephone is the ability to make calls or send text messages, and on some devices, to use multimedia files or browse the Internet using high-speed connections, such as GSM or WiFi. -
Guglielmo Marconi invented the radio in 1897.Radio is a mass and sound communication medium that transmits information, education, culture and entertainment through electromagnetic waves.On the radio you can listen to music and news.