to take smth for granted
nowadays
modern means of communication
alphabet
ink
writing stylus
to invent
foot messenger
to form an ancient communication network
to use smth to send and receive messages
to use smoke signals
miracle
telephone
telegraph
nowadays
modern means of communication
alphabet
ink
writing stylus
to invent
foot messenger
to form an ancient communication network
to use smth to send and receive messages
to use smoke signals
miracle
telephone
telegraph