1. Four network nodes were established between August 1969 and December 1969 by AT&T to provide connections for research institutions with 50kbps lines.
2. The first message sent over the network crashed the system at SRI when the letter G was typed during login, on October 29, 1969.
3. The Internet originated from the ARPANET, a computer network developed by the U.S. Department of Defense in the 1960s to enable communication between researchers in case of war or disaster.