1. A Kingdom Built to Conquer
Alexander did not begin from nothing. His father Philip II had transformed Macedonia from a peripheral Greek-speaking kingdom into the dominant military power of the Aegean, reforming the infantry into the famous phalanx formation and binding the Greek city-states into a coalition under Macedonian leadership. Alexander inherited that army, those alliances, and an already-declared intention to campaign against Persia. Understanding the conquests requires placing them inside this Macedonian state-building project rather than treating them purely as the product of one man's genius or restlessness.
Why it matters: It corrects the common distortion of Alexander as a lone visionary and reveals the institutional and strategic foundations without which no single leader, however capable, could have sustained a decade-long campaign across such distances.