The document outlines the timeline of key developments in the history of the Internet from 1836 to the present. Some of the major milestones include the development of the telegraph in 1836, the telephone in 1876, the launch of Sputnik in 1957, the development of packet switching networks in the 1960s, the creation of ARPANET and the birth of the Internet in 1969, the invention of email in 1971, the establishment of TCP/IP in 1982, the introduction of domain name servers in 1984, and the creation of the World Wide Web in 1991. The timeline shows how the Internet has evolved from early networking research to a global system used for communication, business, media and more.