When and how did the fourth crusade end?

What city is nearly 400 kilometers north of Rome? When did Hadrian get married? How did traders' search for new markets in the west drive the first Western crossings? What were scientists in the middle ages called? What William of Normandy founded to celebrate his victory? What is the origin of come by the hills? Does the feudal system work? What is a bondsman in medieval times? Is the of Russia in the eastern or western hemisphere? What is the story of Trojan Horse? True or false emperor Justinian was a weak leader who was controlled by the army? General who brought Gaul under Roman Control? How has the history of the Arabian Peninsula helped to shape the regions culture? What changes allowed the transition from nomadic to sedentary societies? What were some pieces of work from the middles ages? Council of Trent and ending at the close of the Thirty Years War was known as? What was Charlemagne's ways to bring order to France? What was the western border of the Louisiana? Who were some explorers who explored the western hemisphere? What important long term result of the crusades in the middle east?