How messages were written

In the ancient world letters were written on a various different materials, including metal, lead, wax-coated wooden tablets, pottery fragments, animal skin, and papyrus.

the letters were written by writing in feather and ink.

how messages were sent  

Messages could only be carried by hand.

Communication was only as fast as the messengers could go.

A messenger who had to walk or run could only go about 25 miles a day That letter might take up to 30 days to get to its final destination.

The invention of the telephone

In 1877 and 1878, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s.

History of the Telephone