How was the use of figural imagery in Byzantine art work? How did it change over time?

Byzantine art is at once both unchanging and evolutionary, themes such as the Classical traditions and conventional religious scenes were reworked for century after century, but at the same time, a closer examination of individual works reveals the details of an ever-changing approach to art.

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the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

answer; (c) slaves brought to the americans from africa;