Hell no
The people communicated in many ways like:LetterPersonal MessengerPigeonsEagles
Yes, early man was communicated. It was done by the "sign language". Those people also used to speak by hitting in the wall, and etc. You can get more information on "The history of the Early man".
they communicated in najou
By speech and signals.
There's no such thing as a "Real Language". Languages are there for us to exchange information and knowledge, before anyone could speak people probably communicated with each other by doing movements or pointing and facial and emotional expressions.
The rights and responsibilities of clients can be communicated in organizations by advising people about their rights.
Before learning to farm, people were hunters and gatherers. It was around the end of the Stone Age when humans first started to learn farming. Farming was less labor intensive and people began to form communities.
One can find information on learning how to dredge for gold by reading a book about dredging for gold. One can also find information by talking to people who dredge gold for a living.
people communicated by using electric telegraphic instruments!
theme
I think they didn't, they communicated themselves by signals.
Most definitely. They communicated face to face or by the telephone. The inflection in a voice is worth a hundred words, a facial expression is worth a thousand.