Alexander's Balkan campaign in the context of "Alexandria Oxiana"

Alexander III of Macedon (Ancient Greek: Ἀλέξανδρος, romanized: Aléxandros; 20/21 July 356 BC – 10/11 June 323 BC), most commonly known as Alexander the Great, was king of the ancient Greek kingdom of Macedon. He succeeded his father Philip II to the throne in 336 BC at the age of 20, and spent most of his regency conducting a lengthy military campaign throughout parts of Asia and Egypt. By the age of 30, he had created one of the largest empires in history, stretching from Greece to northwestern India. He was undefeated in battle and is widely considered to be one of history's greatest and most successful military commanders.

Alexander was tutored by Aristotle until the age of 16. In 335 BC, shortly after assuming the throne of Macedon, he launched a campaign in the Balkans and reasserted control over Thrace and parts of Illyria before marching on the city of Thebes, which was subsequently destroyed in battle. Alexander then assumed leadership of the League of Corinth, created by his father, and with his authority over all Greeks he launched a pan-Hellenic campaign to invade the Persia.

Alexander the Great (356 – 323 BC), a king of ancient Macedon, created one of the largest empires in history by waging an extensive military campaign throughout Asia. Alexander was groomed for rulership from an early age and acceded to the throne after the assassination of his father, Philip II. After subduing rebellious vassals, he invaded the Persian Achaemenid Empire in 334 BC. Alexander swiftly conquered large areas of Western Asia and Egypt before defeating the Persian king Darius III in battle at Issus and Gaugamela. Achieving complete domination over the former lands of the Achaemenids by 327 BC, Alexander attempted to conquer India but turned back after his weary troops mutinied. Following his death aged thirty-two in Babylon in 323 BC, his empire disintegrated in a series of civil wars fought between his followers.

Alexander founded numerous settlements during his campaigns, naming them after himself or close followers. These have been the subject of intense debate, as the accounts of ancient and medieval scholars differ wildly and are often contradictory. Plutarch provides the maximum estimate of seventy cities in his Life of Alexander, but most texts attest to between ten and twenty foundations. The Greek Alexander Romance lists between nine and thirteen cities, depending on the recension; the Syriac, Armenian, Hebrew, and Ethiopic versions of the Romance also record twelve or thirteen foundations. Persian sources such as al-Tabari, al-Dinawari, Hamza al-Isfahani, and Qudama ascribe between nine and twelve settlements to Alexander. Stephanus of Byzantium recorded around twenty settlements. Some authors additionally document the number of cities established in a specific area: for example, Strabo records that Alexander founded eight cities in Bactria. The accounts of Alexander's campaigns, primarily those of Arrian, Plutarch, Diodorus, Curtius Rufus, and Justin, provide supplementary evidence. Finally, the geographers Eratosthenes, Ptolemy, and Pliny draw upon the otherwise-lost evidence of Alexander's bematist distance-measurers.