Final answer:
Emperor Paul of Russia did not dig up Potemkin's corpse and violate it. He did commit other unusual acts such as attacking Austrian and Prussian forces, supporting Napoleon, and exhuming Peter III for a posthumous ceremony.
Step-by-step explanation:
The student is asking about the actions of Emperor Paul of Russia, who did not carry out one of the listed activities. While Emperor Paul did perform a number of unusual acts during his reign, the answer to what he did not do is: dig up Potemkin's corpse and violate it. Emperor Paul did attack Austrian and Prussian forces, he controversially changed sides to support his arch-enemy Napoleon, he had ambitions to send an army to invade India (although the grandiose plan never reached fruition), and he ordered the exhumation of his father Peter III for a ceremonial coronation of the corpse. However, there are no historical records suggesting he exhumed and violated Potemkin's remains.