How did the Pope try to convince Christians to join his holy war?

The Pope of the time was Pope Urban II. He gave a speech ensuring that those that fought in the Holy War would be resolved of all sins and would go to heaven despite what they do on the battlefield. He explained that they were acting based on the will of god and said that the the Persians have attacked the holy land.

Explanation:

vertical merger is the term used for the joining of two or more firms involved in different stages of producing the same good or services.

explanation:

answer; migrate from a region;