Was alexander the great really so great?
Killing tens of thousands, he rampaged through the ancient world, not to mention thinking he was a god. And being a manipulative narcissist. He destroyed the persian empire and greece, and conquered over 2,200,000 sq. mi. of land. This conquest was devastating.
Overall , I would say he was a nasty horrible person, but he did unite greece and persia, but still, that can't make up for the senseless killings that held together an empire for 10 years. You decide what he is. Good Or evil.
