Hello Friends, 

                      My Name is Vihaan Shukla. Today I am going to give you a presentation on communication.

Vihaan there is an emergency.Shizuka, Jiyan and Sunio has gone to stone age . You have to come with us as you know all means of communication used in that 

age.

Oh No!!!Nobita and Doremon.why have you come to my school  between my presentation??

Guys ..hurry up!!! Lets go to stone age by this Anywhere Door

Finally we've reached to stone age. 

For searching your friends lets use old communication means like Pigeon Post, Pony Express and Smoke Signal. 

The smoke signal is one of the oldest forms of long-distance communication. It is a form of visual communication used over a long distance. smoke signals are used to transmit news and signal danger.

The Pony Express was a way to deliver mail quickly across the mountains and deserts .

Pigeon post is the use of homing pigeons to carry messages. ... The pigeons were attached with messages, After delivering messasgs the pigeon would naturally fly back to its home.

Smoke Signal