Had he lived we would must likely be talking about Philip the Great, instead of Alexander the Great.
No joke. He wanted to invade the Persian Empire, but knew he’d have to wrap up the Greek city-states before he started. When Al crossed to Anatolia, he liberated the Greeks there and other occupied peoples (and of course took over their rule). The huge polyglot Persian army had Greek contingents who at first didn’t like the Macedonian, but during the long winter at Balkh, as the Great One was healing from serious wounds, a couple hundred thousand Greek reinforcements were on their way to join him, so many that he split his army into four parts and cleaned out all opposition that much faster.
They were both Great.
They affected the whole world in ways few families have ever done.
The Greek culture was dominant for an age, and its heavy influence continues to the present day.
There’s a reason that the New Testament was written in Common Greek.
Very likely true.