Never thought much about Byzantine, but looks like there is a rabbit hole to dig.

But off the top of my head let me say - after Jesus destroyed the forces of Cabal 2000 years, the evil did not raise its head (except in the history book version) until 1666 when the Central London was burnt down and City of London was created and the birth of the Central Banks.

The empire that was there during all this time - Byzantine - probably it was Cabal free.