Answer:The Crusades, however, brought Islam into the center of consciousness of both European Jews and Christians. Not only were Muslims not Christians,.
There are studies that show that electric shocks to the brain can actually help alleviate severe depression in patients. Electrical stimulation is shown to help and new techniques which are basically painless are being researched in order to more adeptly use the beneficial sides of the treatment. The treatments though are rarely used.
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Consensus is very vital in today's society since many issues or problems would arise that would effect different people having different perspective on things. It is important that a leader could build this to create harmony in the group and solving problems would be easier.