ARPANET development began with two network nodes which were interconnected between the Network Measurement Center at the University of California, Los Angeles (UCLA) Henry Samueli School of Engineering and Applied Science directed by Leonard Kleinrock, and the NLS system at SRI International (SRI) by Douglas Engelbart in Menlo Park, California, on 29 October 1969.
The third site was the Culler-Fried Interactive Mathematics Center at the University of California, Santa Barbara, followed by the University of Utah Graphics Department.
In 1982, the Internet Protocol Suite (TCP/IP) was standardized, which permitted worldwide proliferation of interconnected networks.
that should be written with an initial capital letter.
In common use and the media, it is often erroneously not capitalized, viz. Some guides specify that the word should be capitalized when used as a noun, but not capitalized when used as an adjective.
The Internet has enabled and accelerated new forms of personal interactions through instant messaging, Internet forums, and social networking.
Online shopping has grown exponentially both for major retailers and small businesses and entrepreneurs, as it enables firms to extend their "brick and mortar" presence to serve a larger market or even sell goods and services entirely online.
In an early sign of future growth, fifteen sites were connected to the young ARPANET by the end of 1971.