What were Pope Urban's four main reasons to call for the Crusades or war of the cross?

What does citivs means? What was the middle division of the three historical divisions of the roman empire? What is the Lupercal and what is the significance of this place? Did the city of Troy speak Latin when The Romans invaded? When and how did the gothic tradition begin? What century is 1530? What century is 1891? How many Romans ever lived? What forced Europeans to look for other routes east? Is 1980 the last year of the 1970s or the first year of the 1980s? How did the great chain of being work according to medieval and renaissance times? How small is the tiniest waist in history? Origin and meaning of the name Firestine? Who conquered Songhai after 1450? Reasons for the start of the fourth crusade? How did cold war tensions affect the relationships between eastern and western Berlin? Where is Calvin Klein from? Where did the name ryland come from? Who was the Roman Emperor during the time of John the Baptist? When analysts in Western cultures use the word fundamentalism in connection with the Middle East they primarily mean . (Select only one answer) a political system the church marital society the world?