What was the problem in the Crusades?

The growing of crops was one of the most important development in the history of human civilization? What does the name whitni mean and come from? How do you explain the rise of a national culture? What is a checklist? What is the origin of the surname Moghadam? How much did dresses cost in the 1600s? How was a town able to become independent of a feudal lord? In a medieval town how did they entertain themselves? Why did the Muslims wanted to battle the first crusades? What was one impact of the rise of cities under the mongol rule? What is the meaning of the name cadhla? What happened in 135 C.E.? What day of the week was November 11 1945? What is the current year on the western calendar? How did watches change through time? How did cattle ranching and the work of cowhands promote the settlement of the plains? They were a major threat to the empire of Charles? When did the migration to settle Russia start in Ukraine? Did robert fulton invent the conestoga wagons? Which country was divided between east and west?