

That is an interesting point of view. Very USA exceptional. It’s also dumbed down a lot. ARPANET is a computer network, but it’s not internet, nor it was the first. It kickstarted popularity of computer networks in the USA and provided first FTP and (I think) first remote login.
Popularity of computer networks in USA definitely was a formative quality over the 20 years of international development of the Internet.
But saying ARPANET was the internet is like saying gramophone is Netflix.
First computer network to send packets to another computer was British NPL network. Then US government founded ARPANET, built upon that. Except that DARPA besides having own researchers outsourced to Stanford, BBN and University College of London (“How the Internet Came to Be”, quoting I forgot whom from DARPA).
Then French Cyclades computer network built upon ARPANET and proposed that multiple networks should be able to communicate with each other.
Then USA non-profit IEEE looked at all that proposed TCP/IP for cross-network communication, and that is the thing that (after many iterations over a decade) led to the Internet not being separate networks like AOL or Computerverse or whatever.
Now we’re getting closer to the internet and it’s time for https://en.m.wikipedia.org/wiki/Public_data_network
First was Spain with RETD , then France, then USA with Telenet. Then Canada. Then in 1978 we started connecting those separate networks. I think the first properly working project was https://en.m.wikipedia.org/wiki/International_Packet_Switched_Service between British post office and USA post office.
On those public data networks the Internet’s physical layer was built.
In USA U.S. National Science Foundation was founding more and more computer networks, including CSNET. That’s still not internet. It’s 1980 and it will take a decade of new inventions (Ethernet, LAN, DNS) and improvements & implementations (like to TCP/IP) before we will get the internet.
Here’s a nifty source for that decade, because I spent 50 minutes writing this post before I noticed I’m arguing with a guy over the internet about the internet.
https://en.m.wikipedia.org/wiki/History_of_the_Internet (there is a nice timeline list there).
No. Earliest cross node connection was early 1969: https://en.m.wikipedia.org/wiki/NPL_network
https://www.researchgate.net/publication/237130669_How_the_Internet_came_to_be
This is the book be Vincent Cerf where he explains that ARPANET isn’t the Internet. Good to know that the people who created the Internet are wrong.
I get it. You were taught in school that US government created the internet. It’s a good explanation to the 4th grader. It’s also simplistic and incorrect, but that’s how elementary schools teach. It’s like that with a lot of knowledge, it becomes more nuanced the more you know about it.