Whenever one studies the historical period between the 11th and 12th centuries in the Byzantine or Eastern Roman Empire, they come to face with not only a long list of usurpations and palace plots, but also treacherous and opportunistic aristocrats disobeying their superiors, putting the empire's territorial and economic integrity at risk, levying exorbitant taxes and tariffs, and supporting those aforementioned pretenders to the throne. As we all know, these problems snowballed from the death of Basil II onwards and led to dangerous situations for the empire, such as the aftermath of Manzikert in 1071 where most of Anatolia was overrun by hostile forces and the infamous Fourth Crusade of 1204.
Other medieval European centers of feudal power such as France, Britain, the HRE, etc., did see their own revolts and intrigue but nothing on the frequency and scale of the Byzantine elites. When wars happened between these kingdoms and/or the feudal lords within, they weren't usually affairs from which the central authority and the territory it controlled in name would not recover from.
My main question is, why was this so? What factors led to the Byzantine political system being so corrupt and unstable? Did economics play a main role in it or were there other forces at play?
Other medieval European centers of feudal power such as France, Britain, the HRE, etc., did see their own revolts and intrigue but nothing on the frequency and scale of the Byzantine elites. When wars happened between these kingdoms and/or the feudal lords within, they weren't usually affairs from which the central authority and the territory it controlled in name would not recover from.
My main question is, why was this so? What factors led to the Byzantine political system being so corrupt and unstable? Did economics play a main role in it or were there other forces at play?