What was ARPANET?

In 1986, a faster backbone network called the NSFNET (National Science Foundation Network) was created. By 1989, there were over 10,000 host computers connected to the Internet, or "network of networks".

Because of the success of the NSFNET, plans were made to phase out ARPANET. Many of the sites connected to ARPANET were absorbed by the NSFNET, and in 1990 ARPANET was officially dissolved.