When and how did the Internet start?

International Internet Day is marked annually on 29 October. The day commemorates the anniversary of the first message that was sent between two computers on 29 October 1969 through ARPANET, the predecessor of the Internet.

They intended to transmit the word “LOGIN,” but the system crashed just after they had sent the first two letters. Hence, the first message on the Internet was ‘LO’ — as in ‘Lo and behold!’