text: An underground aqueduct was built for a city in this region by the engineer Eupalinos.
full_question: An underground aqueduct was built for a city in this region by the engineer Eupalinos. An architect from this area invented the grid plan for city layouts, which was later adapted by many Roman cities. This home region of Hippodamus, which was originally settled by Luwians, lost its autonomy after the Peace of Antalcidas. Rulers from this region included Polycrates, and its namesake league gathered regularly for a festival on Mt. Mycale. The fleet of a military coalition here lost the Battle of Lade, which took place during a rebellion led by Aristagoras of Miletus. That rebellion against Darius the Great also involved this region's Aegean islands of Chios, Samos, and Naxos. For 10 points, name this coastal region of Anatolia whose Hellenic cities rose up against Persia in a 499 BC revolt.
first_sentence: An underground aqueduct was built for a city in this region by the engineer Eupalinos.
raw_answer: Ionia [or Ionian League; accept Ionian Revolt; prompt on "Anatolia" or "Asia Minor"; generously prompt on "Aegean Sea" until "Luwians" is read]