Christian art's main purpose through the Middle Ages, like that of the stained-glass window from Chartres Cathedral, was __________.

Christian art's main purpose through the Middle Ages, like that of the stained-glass window from Chartres Cathedral, was __________.


Christian art's main purpose through the Middle Ages, like that of the stained-glass window from Chartres Cathedral, was __________.


Correct Answer:  
to educate illiterate people in Christian doctrine