The three pillars of absolutism in tsarist Russia are "Orthodoxy, Autocracy, and Nationalism".
Option: C
Explanation:
Absolutism progressively evolved in Russia during the 17th and 18th centuries. It superseded the Moscow Grand Duchy's despotism. Under Byzantine principles Ivan III established and laid the groundwork for the tsarist autocracy, a structure that would rule Russia for centuries with some differences. Orthodoxy: strong ties between both the Russian Orthodox Church and the Govt; Autocracy: absolute state power; Nationalism: reverence for Russian values and abolition throughout the empire of non-Russian communities adopted by Nicholas I and not very popular.