What year was the Vitruvian Man drawn?

What are two ways Arab traders affected the Islamic world? Did Alexander pechersky have a wife? How would Israel and US go to war with each other? How radioisotopes are used in food preservation? How did young malala become famous? What is the role of men in today's society? Why did singer Donny Hathaway kill himself? How did religious attitudes affect the rule of Charles II and James II? What legislation outlawed any combination of companies that restrained interstate trade or commerce? What message was given by the Gettysburg Address? What were the Social classes of America? Who switched allegiance to the US during the revolutionary war? How did the Romans make sure that there would never be another war with the carthans? Why is the 15th century a turning point? When was Apache - Viet Cong soldier - born? Benjamin Franklin helped form the nation's? When was the olympics last held in England? What is the device that people used to do laundry in during the olden times? When was the UN created? What are 5 aspects of the egyptian culture?