the ycould not really due to the sea and mountains.
Spartains ate this discusting mix of pork blood vinigar and salt. Other citystates ate cheese, wine, grapes, and bread.
To gain land for farming
they used scribes to write their messages and then had somebody else run it over to the other person.
people use to write letters and give to postmans or in more ancient days they would write carvings on stones.
For the very same reasons why we speak different languages today in order to communicate with each other.
Insects communicate with each other by sensory.
I do not know how Jaguars communicate with each other. They might growl or purr.
they wrote notes and they sent coins as pictures if the other person didn't know how to write or the person sending it would send the coin if they didn't know how to write.
They communicate by having hallucinatons
They communicate with each other through Canalicili Extensions.
Salamanders communicate with each other by visual ways. They also secrete a chemical that other salamanders can smell as a way to communicate.
Penguins communicate by touhing each other, or feeling each other