This ‘empire’ is made up of three city states on our planet that don’t belong to any country or nation and don’t pay taxes. In Washington, it’s the District of Columbia. In England, it’s the inner city of London. In Rome, it’s the Vatican.
None of these 3 city states belong to the country or city in which they are located, yet these 3 states control the world, economically through London’s inner city, militarily through the District of Columbia, and spiritually through the Vatican.