Ivan III, better known as Ivan the Great, wasn't just a name; he was a nation builder. Ruling from 1462 to 1505, he transformed Muscovy from a small principality into the powerful Russian state. His reign was a masterclass in strategic maneuvering, consolidating territories through skillful diplomacy, strategic alliances, and, when necessary, military force.
One of Ivan's greatest achievements was freeing Russia from the Mongol Golden Horde's control. By refusing to pay tribute and confronting them militarily (though the actual battle was more of a standoff), he solidified Russian independence. He also adopted the title of 'Tsar', claiming succession to the Byzantine Empire after Constantinople fell, thereby positioning Moscow as the 'Third Rome' and himself as the protector of Orthodox Christianity. This boosted his authority and legitimized his rule. Ivan's legacy includes a centralized government, a unified legal code, and the expansion of Moscow's influence, laying the foundation for the Russian Empire that would follow.