What happened 1095 AD

At the Council of Piacenza in 1095, envoys from Alexios spoke to Pope Urban II about the suffering of the Christians of the East and underscored that without help from the West they would continue to suffer under Muslim rule. Urban saw Alexios's request as a dual opportunity to cement Western Europe and reunite the Eastern Orthodox Church with the Roman Catholic Church under his rule.

Pope Urban II hosted the Council of Clermont in November 1095 that resulted in the mobilization of Western Europe to go to the Holy Land.

On 27 November 1095, Pope Urban II called together the Council of Clermont, and urged all those present to take up arms under the sign of the Cross and launch an armed pilgrimage to recover Jerusalem and the East from the Muslims. The response in Western Europe was overwhelming.