One of the key works in the extensive historiography of the Crusades. In European history, there are not so many events and phenomena that gave the name to an entire era. Such events, which largely determined the further development of Europe, undoubtedly include the Crusades. The unprecedented enthusiasm of pilgrims and warriors traveling to uncharted lands to liberate the Holy Land - and the death of thousands of people due to the rash actions of the leaders of the campaign;