Why is the history of India so complex?

Well, I think that maybe the king was very cruel and he wanted things in a strict way. There is a little section that i Pulled out of google to cite my evidence.

"Different states came into being at different timelines, hence different boundaries. Ki ngs, the Raja of Koch Bihar and the Maharaja of Rangpur As far as history records, the little territories were apparently the result of a confused outcome of a 1713 treaty."