As background: Perdiccas III was the king of Macedonia before Phillip II. He was killed in a battle in Upper Macedonia in 359 BC and succeeded by his infant son Amyntas IV, with Phillip as regent. Phillip soon usurped the throne. Phillip, who had been been a hostage in Thebes and was mentored by the general and military innovator Epaminondas, reformed the Macedonian army and created the Macedonian phalanx and elite cavalry.
So what if Perdiccas III had lived a longer life, leaving Amyntas IV old enough to rule, meaning no Phillip II or Alexander the Great? How long would the Greeks keep destroying each other without Macedon unifying them? What would happen to the Persian Empire?
So what if Perdiccas III had lived a longer life, leaving Amyntas IV old enough to rule, meaning no Phillip II or Alexander the Great? How long would the Greeks keep destroying each other without Macedon unifying them? What would happen to the Persian Empire?