(CNN) — By the time he died, aged just 32, he had redrawn the map of the northern hemisphere, conquering land across three continents and ruling over states from Egypt to modern-day India — over 2,000 ...

After Alexander’s conquest, Iran became the center of a struggle between his successors and rising eastern powers. This video explores the Seleucid and Parthian empires — the dynasties that carried ...

"Despite their historical importance, empires have received scant attention from social scientists. Now, Alexander J. Motyl examines the structure, dynamics, and continuing relevance of empire - and ...