The later art depicting angels, the virgin mary, and infant christ was directly inspired by earlier greek depictions of aphrodite (latin venus) and her son eros (cupid).

Taking into account the statement above: "The later art depicting angels, the Virgin Mary, and infant Christ was directly inspired by earlier Greek depictions of Aphrodite (Latin Venus) and her son Eros (Cupid)."

The answer is: Greek heroes and Christian theology.

Hope this helps.

c) troops march forward in close formation against newer, more accurate weapons