Electricity was first discovered in the 1850's. It was put into a useful form in the 1880's by Tesla. Twenty years later with A/C. On display in the Worlds Fair and made public use as street lights...
People have been using water ever since humans appeared on earth. Water was a necessity for human life, so water must have been used since humans first appeared on earth.
Arpanet started in the 1960's.
I started using the Internet in the beginning of the 1990's.
The origins of the Internet reach back to the 1960s when the United States funded research projects of...