2017’s The Collapsing Empire is the first volume in John Scalzi’s The Interdependency.
Thanks to the Flow, a poorly understood phenomenon that permits faster-than-light travel, the forty-seven systems of the Interdependency have enjoyed a thousand years of mutual dependence and trade. The Interdependency is completely dependent on the stability of the Flow. Therefore, the Flow is stable. To think otherwise would be … unthinkable.
Polite people do not mention or remember that there used to be forty-eight systems (Dalasýsla, like Earth1 before it, lost its connection to the Flow).
End has two characteristics of note: it is the only naturally habitable world in the Interdependency, and its home system is farthest from the crown world, Hub. Make that three characteristics of note: as a consequence of being the oubliette of choice for the Independency’s undesirables (political and otherwise), the population of End are a bother. Just ask Lady Kiva Lagos, captain of the good ship Yes, Sir, That’s My Baby.