When did the Incas come from?

Which empire is most important Mauryan Gupta or Persian? When was the first century? What is the Greek word for stone? Did egyptians make offerings to the gods? How long did the pre-Inca era last? Who was the legendary wielder of the sword Caliburn, also known as Excalibur, in the tales of King Arthur? Why were coins invented? What does the word xzavier mean? What country Accepted The Gregorian Calendar In The Nineteenth Century Just Prior To Egypt? What sacrifice does Agamemnon made to appease Artemis in the Trojan war and the fall of troy? Who got shot with an bowing arrow in the ankle in the Trojan war? Who was the paterfsmilias? What is the name of the ancient counting device used thousand of year ago that is still used in some part of the world today? Who invented squat toilet? Where did the word pin originate from? When was Al-Ra'i wal Nisaa created? What was the names of the Aztec instruments? Origin of a lotus eater? Is there a god related to the god Raven? How is Icarus myth transformed in modern versions?