When was the shadoofinvented?

In the Middle East during Neolithic timesthe development of farming brought about? Who or what stands guard at the gates of Hades? Who lived on Mount Olympus? What are the features of a ziggurat? What exactly was sold in ancient agora? Famous student of Pluto? What blunder did Trojans make? What region did the Incas rule? Why was the peloponnesian wars a disaster for everyone who fought in them? What was the Oath of Tyndareus? Why did Sparta make no great contribution to civilization? What is the four letter name for the goddess of nature? How did geography influence the development of Greco-Roman society? What are the main differences between Columbia and the USA? Why does Odysseus begin to tell the phaeacians his story? Is Hestia older than Hades? How does the color green on the flag help remember Aztec history? How old did Hephaestus was alive for? Why did the Aztecs make sacrifices? Greek Mythology Compared To Norse Mythology?