How did Pope Urban II respond to Seljuk attacks on the Byzantine Empire? He tried to overthrow European lords who fought among t
hemselves. He asked Christians to end their pilgrimages to the Holy Land. He established a new area for important Christian religious sites. He called on all Christians to help take control of the Holy Land.
The main cause of World War I was actually a wrong turn. The assassination of Archduke Franz Ferdinand in Sarajevo on 28th June 1914, it triggered a chain of events that resulted in World War 1.
