Question

search internet and prepare a list of different means of communication used since early days also find out the century/decade in which these means of communications were used​

Answer 1

Answer:

In the early centuries the means of communication used to be the form of letter writing on a piece of paper, which was sent by a messenger. There were no communications done through telephone or mobile phones.

Explanation:

At the past time there was some sort of signals used for notifying the receivers about certain messages, by blowing through some tools creating a typical sound, making the receiver of the message to understand the present status.

Answer 2

Answer:

Verbal correspondence or essentially talking. Messages by means of pigeons. Messages through sprinters. The sprinters were later supplanted by horsemen.

Another methods for correspondence since early days was composing letters. Cavern sketches and epigraphs.

Smoke signals, rhythms, and lights in key positions. There is no accurate data about in which century these methods for correspondence were utilized out of the blue.

Explanation: