Daylam and the Caspian

The mountain and coastal dynasties of northern and western Iran, from the Ziyarid princes of Tabaristan to the Buyid amirs who held the Abbasid caliph himself, to the Nizari fortress-state that ruled without ever holding contiguous ground.

The line below is a time axis. Position on it is date, so concurrency is visible: concurrent polities sit side by side rather than in sequence.

9 sourced edges run between this region and another, to Sasanian Empire, Abbasid Caliphate, Great Seljuk Empire, Fatimid Caliphate, Mongol Empire and Mamluk Sultanate. Those are not drawn on this line — a thread that crossed regions would assert a sequence nobody cited — but they are on each polity’s own page.