The first major packet-switched network.
Network created by ARPA in 1969, primarily allowing data transfer between Government laboratories. (Now defunct).
dvanced esearch rojects gency Net work] Developed in the late 60s and early 70s by the US Department of Defense to provide wide-area-networking connecting research computers that would survive a nuclear war. The precursor to the Internet.
Advanced Research Projects Agency Network, a packet switched network developed in the early 1970s. The grandfather of today's Internet, ARPANET was decommissioned in June, 1990.