How is this is master chief or somebody else

that is what they call him because hes a spartain

HALO

His real name is John as cortana said in halo 4, but they call him master chief

Explanation:

hes one of the strongest beings and knows how to take down the covenant with his AI cortana. Ive been playing halo 5 since last christmas and still havent finished it because i played 3 and 4 before 5 :\

for many centuries, the catholic church has been a patron of the arts. the church has used various scientific methods to maintain its power.

not 100% sure though!