1. The Internet originated as a US Defense Department network called ARPANET in the 1960s to enable communication between computers even if some were disabled.
2. It grew through the 1980s as organizations connected local networks, and the NSF established a national backbone. The World Wide Web launched in 1991, attracting public interest.
3. The Internet is a global network of interconnected computers and networks that allows people and organizations to access shared information and resources. It is an open, participatory medium where anyone can publish information or create new services.