Answer:
The Austrian Empire
Step-by-step explanation:
The empire that was most associated with having control of Eastern Europe was the Austrian Empire that later came to be called Austro-Hungarian Empire by imposing authoritarianism in the eastern area where Austria is located and similarly intended to exercise authority in the Eastern Zone, where Hungary is located. This authoritarian control greatly damaged the Italians and Slavs and was also not well seen by different nationalist currents, considering it an authoritarian government and which was governed by a dual monarchy that caused discomfort and controversy.