How to the crusades show a misunderstanding and conflict between the monotheistic faiths?

Misunderstanding and conflict between the monotheistic faiths:

Monotheism is the belief that there is only one god and is opposite of the religion who believe in the existence of many gods like the religion of Judaism or Christianity.

Crusades were organised by the Christians who were in western part of Europe who wanted to stop the expansion of Muslim to their area.

They also wanted to regain the area of middle east and other territories where there was Christianity before the expansion of Muslim in that region to again spread Christianity.

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during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.