Balanced, well researched, covering multi-facet of events documentaries are worth watching multiple times.Pro-Raj (British rule over the wide swath of the world/trade routes) can call this "apologetic" and anti-Raj can call this "Glorification"...
The sheer amount coverage across the world and connecting the different British rule Lands with contemporary British thinking is astonishing... Though Its covering the small events from a particular region but the ideo of the documentary is not what happened. But why all that was happening?
Worth watching.... as mentioned, multiple times....