What was the cause of the crusades? What were the effects of the crusades?

Question: What was the cause of the crusades!? What were the effects of the crusades!?
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Causes of the crusades:

The Crusades were an attempt by the Catholic church to re-gain control, authority and power over provinces in the Middle-East!. Pilgrims were denied the right to visit the holy lands by the Muslims and the Kingdom of Christendom wanted to free Eastern Christians from islamic rule!. Jerusalem was the usual target - it was of historical, spiritual and religious importance to Christian nations and so it had to be seized!. The Pope had the ability to instigate a Crusade, and he managed to convince an overly large amount of people to participate!. Everyone in the Middle Ages was devoted to the Lord and committed themselves to following the teachings of the bible!. The Church promised everyone who was involved a remission of their sins and protection of land - almost as a persuasion!.

Effects of the Crusades:

Each crusade had its individual effects depending on the circumstances!. In general, the Crusades allowed Arabian medical practices and architectural knowledge to be transferred to the West!. Conquered towns helped to provide extra income for the treasury from furs, ivory and spices!. It was uplift to Christians worldwide, knowing their sacred place of worship was securely in the hands of fellow believers!.Www@QuestionHome@Com

The original cause was the insecurity, murder, and robbing of the pilgrims, religeous pilgrims!.

The cause to protect pilgrimedges, escalated to all out war and domination of the middle east, and it became, down graded itself to a treasure hunt, and political battle for power, and the capture and politicaziation of the holy land!. That is to say the occupation of the Holy Land!.

Effects were continuous war between factions of the middle east, and western Europe right thru to after the crusades ended, into the middle ages!.Www@QuestionHome@Com