treaty drawn up to allow for europeans to come in y 1202: pope innocent iii called for another attempt to recapture jerusalem: number of crusaders was not enough, venusians made a deal with crusaders to capture land. Innocent iii threatened excommunication for those who participated: crusaders accepted another offer. future byzantine emperor offered money if army got rid of current ruler. event when much of art and treasure of roman period and middle period was lost y destroyed and/or stolen by crusaders. In reality: did not happen: many ideas of antiquity (ex: writings of aristotle) were preserved. Southern italy and sicily normans re-conquering territory from muslims living there y y eastern europe and balkans wars carried out against non-christians living on the fringes of. Europeanization europe becomes more established as a uniform cultural zone. pillar was catholic church and idea of a christian community. need for christians to adopt voluntary poverty.