What was the signing of the peace treaty to end the third crusade?

Who had the idea of the crop rotation? What century is 1519ce? During which century were Africans first forcibly brought to the western hemisphere and the New World? How was Lancelot different from Galahad his son? Where in Europe did feudalism take place? How many years did the Turks occupied the balkan countries? Where did most early European cities form? What countries were under western influence after World War 2? Which empire ruled Rome when it was largest? Do you capitilize crusades? How did railroads most influence the success of farmers in the American West? What does the Roman Emperor Claudius II have to do with Valentine's Day? What is a stirgil? When and where did transgenderism and transsexualism first began? What were the ancient roman slums? Is Constantine important for anything? How long did king Arthur rule over Camelot? What did Roman emperors Constantine and Theodosius you have in common and how did their actions differ? When did Medieval Mayhem happen? Who invented porcelian?