The transition between the square base of the building and the dome/superstructure on Hagia Sophia is made possible by triangular supports called

pendentives

Explanation:

Are the constructive improvements which these elements  form spherical triangulars which are transitioned between square shapes of the base and the dome of the round shape.

c is the answer for this

hi there!

moors is essentially another word for muslims.

the moors invaded spain around year 700, during their time ruling spain the muslims promoted religious tolerance (moors tolerated jews who were viewed as outcasts by northerners), the moors as well had a great impact on their language, and architecture (palaces were created).

i hope this !