More than an inheritance
Alexander inherited a great army and a planned war, but the platform reads his success as more than the cashing of an inheritance — others have squandered better advantages. In a single decade he overthrew the largest empire in the world, won every battle he fought, and reached the Indus before his own men's exhaustion stopped him. The platform reads the causes as a rare convergence: the soldier's genius, the leader's charisma, and an ambition that recognised no natural limit, all resting on the army Philip built.
Generalship
The platform reads Alexander's generalship, as Arrian records it, as the first cause. He was a battlefield commander of the highest order — bold, fast, and able to read a battle and strike at the decisive point, as at Gaugamela, where he drove his cavalry wedge straight at Darius through a far larger Persian army. He was a master of siege (Tyre, the rock fortresses of the east) and of the logistics of moving an army across thousands of miles of hostile terrain. The platform reads his generalship under military command: the technical excellence that turned Philip's instrument into an unbroken record of victory.
Leadership and charisma
The platform reads Alexander's personal leadership as the second cause, and perhaps the decisive one. He led from the front, sharing every danger and hardship, taking wounds, and binding his men to him by an example they would follow to the edge of the world. The platform reads this under leadership through example: the army endured a decade of campaigning in unimaginable conditions because the king asked nothing he would not do himself and made each soldier feel part of a story of glory. His charisma was a strategic asset of the first rank.
Ambition without a limit
The platform reads the deepest cause — and the one that finally checked him — as ambition without a natural terminus. Alexander's pothos, the longing that drove him ever onward, was the engine of his success: he never consolidated when he could advance, never rested when he could conquer. The platform reads this as both the secret of his achievement and its limit: the same drive that took him to the Indus would have taken him further still, and it was stopped not by any enemy but by his own army's refusal to go on. The ambition that conquered an empire could not be satisfied by one, which is why the conquest, magnificent and complete, left the harder work of holding it entirely undone — the subject of the limits of conquest.