The Indian Sultanates
Turkic and Afghan rule in northern India, founded by a Ghurid slave-general and outlasting every polity that produced it.
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.
2 sourced edges run between this region and another, to Ghurid Sultanate and Timurid Empire. 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.