The origins of the Internet are to be found in ARPANET, a computer network set up by the Advanced Research Projects Agency (ARPA) in September 1969. ARPA was formed i 1958 by the Defense Department of the United States with the task of mobilizing research resources, particularly from the university world, toward building technological military superiority over the Soviet Union in the wake of the launching of the first Sputnik in 1957.
p. 10 - The Internet Galaxy - Reflections on the Internet, Business, and Society (2001) - Chapter 1, Lessons from the History of the Internet