Put very simply, as one muscle contracts, the corresponding muscle relaxes.
Negative to neutral. Most people do not like being saddled with a future coworker of they had not meet prior to them. They feel it force. some may be happy, some neutral, and most will be negative/pessimistic/Moody while thinking of a bad time they'll have with them. it isn't until time proves them wrong.
As of 2009, Sunni Muslims constituted 87–90% of the world's Muslim population-
the Shia believe that leader is called an imam and this "caliph/imam" should be a direct descendant of Mohammed-
and I have no clue on the last one
Before the split in 1054, the Eastern Church and the Western Church view the Pope differently by the Eastern Church recognizes the Pope's full or complete power. The Pope did not want the title as Ecumenical Patriarch and would want the Byzantine emperor to recognize the Pope's power.