What ancient city, built by Darius I, served as the capital of the Achaemenid Empire and was known for its impressive architecture and the "Gate of All Nations"? Persepolis Babylon Susa Ecbatana None Which ancient Persian ruler is known for establishing one of the largest empires in history, including the famous Achaemenid Empire? Cyrus the Great Darius III Xerxes I Artaxerxes II None Which Persian king is famous for launching the invasion of Greece in 480 BC, which included the Battle of Thermopylae and the naval Battle of Salamis? Cyrus the Great Darius I Xerxes I Artaxerxes I None What ancient Persian system of communication, using a network of mounted couriers, allowed for rapid communication across the vast empire? Persian Postal Service Pony Express Royal Messengers The Royal Road None Which ancient Persian ruler is credited with the creation of a code of laws known as the "Cyrus Cylinder," which emphasized religious tolerance and humane governance? Darius I Xerxes I Cyrus the Great Artaxerxes II None Time's up