The INTERNET was born in 1969, when a paranoid American military
had nightmares about the primary communication centers being
bombed out by Russians. To prevent suck occurrence, the ARPA
(Advanced Research Projects Agency) set up four communication
hosts, linking them in such a fashion which would ensurethat even if
one got bombed out. Communication would route aroundthe affected
area and stay alive.
This network called ARPA net quickly grew. This primary service on
ARPA net was electronic mail. It was the first time that emails actually
came into use. In very short time, students began linking their own
campus networks into ARPA net, using a well defined protocol TCP-IP.
This joining of networks was also called inter-networking, and soon the
entire setup was called INTERENT.
In 1973, ARPA net allowed international bodies to the net, and after
that there was no looking back.