How America Built the Internet — and Almost Gave It Away

On October 29, 1969, a UCLA computer science student named Charley Kline sat down at a terminal and typed "LOGIN" to connect to a computer at Stanford Research Institute 350 miles away. The network crashed after two letters — "LO" — was all that got through.

It was the first message ever sent over what would become the internet.

The person at Stanford who received it called UCLA to report the crash. They fixed it and tried again. It worked.

America had just taken the first step toward building the most consequential technology in the history of human civilization — and nobody in the room fully understood what they'd started.

The Cold War Origin

The story begins not with Silicon Valley entrepreneurs but with Soviet missiles.

On October 4, 1957, the Soviet Union launched Sputnik. The shock to American confidence was enormous. Within a year, Congress created the Defense Advanced Research Projects Agency — DARPA — to ensure America would never again be caught off guard by a technological adversary.

DARPA's mission was to fund research so far ahead of its time that it seemed almost science fiction. One of its early projects was a question posed by a RAND Corporation researcher named Paul Baran: what would happen to the American communications network if the Soviet Union launched a nuclear strike?

The answer was: it would collapse. The telephone network was centralized — destroy the central switching nodes and communication would fail. Baran proposed something radical: a distributed network with no central node, where data was broken into "packets" and routed dynamically through whatever connections remained functional. If one path was destroyed, packets would find another.

This was not the internet. But it was the conceptual seed.

ARPANET: The Network That Worked

DARPA funded a network to test packet-switching concepts in practice. In 1969, four universities were connected: UCLA, Stanford Research Institute, UC Santa Barbara, and the University of Utah. This was ARPANET.

The people who built ARPANET were mostly graduate students and young researchers. They were solving practical problems — how do you get two different computers to talk to each other? — rather than building toward a grand vision. The protocols they developed, the technical standards they argued about in memos called RFCs (Requests for Comments), became the foundation of the modern internet.

By 1971, ARPANET had 15 nodes. By 1973, it had gone international, connecting to networks in the UK and Norway. And the researchers on it had discovered something nobody had planned for: email.

Email: The Killer App Nobody Designed

Ray Tomlinson, a programmer at Bolt Beranek and Newman (the company that built ARPANET's routers), decided in 1971 to modify an existing file-sharing program so it could send messages between users on different computers. He chose the @ symbol to separate usernames from computer names. He sent the first network email to himself.

He later admitted he couldn't remember what that first message said. "Something like QWERTYUIOP," he guessed.

Within months, email was the dominant use of ARPANET. Researchers who had been given access to share scientific data were using the network almost entirely to message each other. Military planners were initially irritated. They had funded a data network; what they got was a global messaging system.

They kept funding it anyway.

From Military Network to Civilian Infrastructure

Through the 1970s and into the 1980s, ARPANET remained largely a tool for researchers and academics. The key transition came in the early 1980s with two developments.

TCP/IP (1983) — Vint Cerf and Bob Kahn developed the Transmission Control Protocol and Internet Protocol — TCP/IP — which became the universal language that allowed any network to communicate with any other network. On January 1, 1983, ARPANET switched to TCP/IP. That date is sometimes called the birthday of the internet.

The creation of NSFNET (1985) — The National Science Foundation built a new network — NSFNET — to connect universities across the country. Crucially, NSFNET had a policy forbidding commercial use. It was purely for research and education.

Then in 1991, NSFNET reversed course and opened the network to commercial traffic. Within three years, commercial internet service providers had proliferated across the country. The web browser had been invented by Tim Berners-Lee (a British scientist working in Switzerland, the one major non-American contributor to the core internet story). America was online.

The Web Boom and the World It Made

What happened next is within living memory but already feels like ancient history. In 1994, there were roughly 3,000 websites. In 1999, there were over 3 million. In 2026, there are over 2 billion.

The economic transformation was unlike anything since the Industrial Revolution:

• Retail — Amazon, founded 1994, is now the third-largest company in America by revenue.
• Media — The newspaper industry, which had been economically stable for over a century, collapsed in roughly a decade as advertising moved online.
• Finance — Electronic trading now accounts for the vast majority of stock market volume.
• Communication — The letter, the fax, and the long-distance phone call became obsolete within a generation.
• Knowledge — Wikipedia, launched in 2001, now contains more information than all the encyclopedias ever printed.

The Part America Almost Gave Away

Here's what almost nobody knows: the foundational software of the internet — the protocols, the standards, the basic architecture — was developed on US government funding and released as open, non-proprietary standards. America didn't patent the internet. It gave it to the world.

This was a deliberate policy choice, and a contested one. The decision to keep internet protocols open and freely usable by anyone meant no single American company could own the internet as infrastructure. It also meant the technology spread globally with extraordinary speed, creating a global network rather than an American one.

Whether this was the right call depends on what you value. American companies captured enormous value from the internet's open infrastructure — Google, Amazon, Facebook, Apple collectively represent trillions in market capitalization. But other countries built their own industries on the same foundation: Samsung, Alibaba, TSMC, Spotify.

The internet is the most successful American export that America never sold.

What Comes Next

The original ARPANET researchers who connected four universities in 1969 could not have imagined what they were starting. Neither can we fully imagine what the next 50 years of networked technology will produce.

What we know is that the decisions made in American research labs, American universities, and American government agencies between 1969 and 1995 created the conditions for the most rapid economic and social transformation in history.

It started with two letters — "LO" — and a crashed connection at 10:30 PM on October 29, 1969.