History Discussion/NEED ASAP

In considering Constantinople’s Hagia Sophia, describe the primary techniques that the architects used to keep such a large dome from collapsing. Explain the key aspects of the design that allow light inside of the Hagia Sophia, and speculate on the comments that Augustine might have had on the importance of this design feature. Of the Byzantine mosaics in Chapter 8 and in the Explore area, identify the one (1) that you enjoy most. Then, explain the message that it was intended to communicate to the medieval worshipper. Identify one (1) specific work of art in modern times that communicates in some similar way, whether for religious, political, or ideological purposes.