A. Urban II
These incursions prompted the emperor of Byzantium, Alexius I Comnenus to send a delegation to Piacenza, Italy, asking Pope Urban II in March 1095 for help against the Turks. On November 27, 1095, in Clermont, France, Pope Urban II called for a crusade to help the Byzantines and to free the city of Jerusalem.
Origami is important in manufacturing the foldascopes
because the foldascopes made use of the basic principles of origami and by
that, it is responsible for ending all the pieces line up and for it to be in
lined and fit together.