I tackled Borg history at length in the latest issue of Star Trek
Magazine. (It's issue #20, has Patrick Stewart and a drone on the front cover.)
does offer an explanation for the Borg. Without going into great details, certain events about 6,000 years ago gave rise to the Borg.
However, I think that's also incomplete. Some novels have referred to the Borg as being active as early as two billion years ago. Clearly, both
can't be right, can they?
I think they can work.
The Borg could simply be a natural evolutionary end to certain humanoid species; throughout time and space, different species merge with their computers, and create something Borg-like. In time, these Borg-like races could come together.
Or, the Borg pre-existed Destiny
's revelations, and whatever was created in Destiny
was, ultimately, assimilated into the Borg Collective. Personally, that's the sequence of events that I favor. (Specifically, I believe the Borg Queen arose due to that assimilation; there's evidence in Destiny
for that viewpoint.)
But, if that's so, then what created the Borg?
Well, I worked out an origin. And it's really, really
cool. Unfortunately, I couldn't use it. I hint at it, though. Bioweapons. I think the Borg were a bioweapons project gone horribly wrong, a weapon built for a war that they outlasted.