Why did colonel arthur brooke and his men retreat from north point?

Hey couldn't take on Major General Smith's 12,000 American troops without Vice Admiral Cochrane's support.

Though typically, that which is called the  great schism  refers to the east-west  schism. it was the greatest  effect  of the east-west  schism  was the creation of two separate churches that had previously been mixed under one church, the eastern orthodox church and the roman catholic church.