Since 1861 when the New York power block took control of Washington DC to prevent the South from direct Trade with Europe. We've been living under this oligarchy ever since.
I think Farrell would say that what you cite is a part of a longer continuum. He traces economic control back to Babylon, to Byzantium, to Venice, to London, to New York (if I remember it all correctly).
Farrell sees some real continuity to all of this. An ideology about gold and religion and physics which has shaped our world for thousands of years and which is behind virtually all political/military endeavors. There is an elite which does not want to share power.
Some of the big events (1861) are more noticeable. Farrell tries to connect a lot of dots and make the case that it’s all a lot bigger than it appears.