rcstevensonaz
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Excellent point! But... FreeBSD 2.0, which was released in November 1994, was the first version of FreeBSD without any code from AT&T. So I think this largely comes down to semantics (and lawyers).from your reference:
Background
In 1974, Professor Bob Fabry of the University of California, Berkeley, acquired a Unix source license from AT&T. Supported by funding from DARPA, the Computer Systems Research Group started to modify and improve AT&T Research Unix. They called this modified version "Berkeley Unix"
However, even more interesting: it turns out that macOS has the licensed right to use the UNIX trademark (https://en.wikipedia.org/wiki/Unix)