Which early civilization had the first carefully Planneo cities with sophisticated plumbing?

What important event happened between 280 bc to 210 bc? How long did Zeus and his siblings battle Cronus for? Did Rome have a period in their history when they had a lot of money power art trade and food? Who did Athena marry in Greek mythology? Was Montezuma black? What was Persia the ancient origin point of? When did the iron age began? Where does the last name pantoja originate from? What are some words describing Cleopatra? Where did the New Age faith originate? What mythical beast did Hercules slay? What it the Greek god Hermes the protector of? Who was the queen of Egypt who visited Solomon? What caused the fall of the Aztec Empire? How was wrestling in the Ancient Greece different from today's wrestling? Who is Theoclymenus? How did farmers in ancient mesopatamia learn to deal with flooding? Who adopted Hephaestus? How long ago did the predynastic period of Egyptian history last? Who killed the Greek goddess Athena?