In 1129 AD after facing criticism from religious leaders, the Catholic Church formally endorsed the Knights Templar.
This endorsement led Pope Innocent II to make a papal bull Omne Datum Optimum, a decree that knights were under the authority of the Pope exempting them from taxes and the ability to cross borders freely.
Since to join a person would have to give their money, possessions, and land to the order, the Templar became quite a wealthy organization. The money the Knights gave went into building temples across Europe.
Knightfall premieres Wednesday, December 6 at 10 EP only on HISTORY.