Hellenistic period

In classical antiquity, the Hellenistic period covers the time in Greek, Eastern Mediterranean and Middle Eastern history following Classical Greece, between the death of Alexander the Great in 323 BC and the death of Cleopatra VII in 30 BC, in which all these regions were under the influence of Greek leadership, culture, and language as a result of Alexander's conquests.

After the military campaigns of Alexander the Great, the subsequent conquest of the Achaemenid Empire in 330 BC, its disintegration shortly thereafter in the Partition of Babylon and subsequent Wars of the Diadochi, Greek kingdoms were established throughout West Asia (Seleucid Empire, Kingdom of Pergamon), Northeast Africa (Ptolemaic Kingdom) and South Asia (Greco–Bactrian Kingdom, Indo-Greek Kingdom). This resulted in an influx of Greek colonists and the export of Greek culture and language to these new realms, a breadth spanning as far as modern-day India. These new Greek kingdoms were also influenced by regional indigenous cultures, adopting local practices which were deemed beneficial, necessary, or convenient. Hellenistic culture thus represents a fusion of the ancient Greek world with that of the Western Asian, Northeastern African, and Southwestern Asian worlds. The consequence of this mixture gave rise to an Attic-Ionic based Greek dialect, known as Koine Greek, which became the lingua franca throughout the ancient world.

During the Hellenistic period, Greek cultural influence reached its peak in the Mediterranean and beyond. Prosperity and progress in the arts, literature, theatre, architecture, music, mathematics, philosophy, and science characterize the era. The Hellenistic period saw the rise of New Comedy, Alexandrian poetry, translation efforts such as the Septuagint, and the philosophies of Stoicism, Epicureanism, and Pyrrhonism. In science, the works of the mathematician Euclid and the polymath Archimedes are exemplary.