Why was Svyatoslav called Alexander the Great of Eastern Europe?
The nickname Alexander the Great was assigned to Prince Svyatoslav with the light hand of the historian Karamzin, who discovered a certain similarity in the achievements of the Great Macedonian and the Grand Duke. Just like the Macedonian Svyatoslav, he began to strengthen his personal power, create a strong centralized state, and unite the appanage principalities. This role is visible even in the historical "word about Igor's regiment." Svyatoslav, like the Macedonian, spent most of his life in military campaigns, significantly expanding the borders of his state and crushing the eternal enemy of Russia - Khazaria. In the west, Svyatoslav conquered Bulgaria and hatched plans to seize Byzantium. And finally, like Alexander the Great, Svyatoslav died on the march.
Svyatoslav Igorevich was a great warrior, whom his compatriots and subjects accused of being engaged only in external affairs, and did not think about internal affairs.
During their short life, the Khazar Kaganate suffered at the hands of Svyatoslav, Bulgaria, the Pechenegs, the Vyatichi began to pay tribute to Kiev. And even the great Byzantium was forced to admit defeat from this prince.
If he had not died at such a young age - about 37 years old - it is quite possible that his victories would not have ended there.
Prince Svyatoslav was a very interesting person. He paid a lot of attention to centralizing power, concentrating it around him. But he also confirmed his power by deeds, for which he was often compared with Alexander the Great.