The moldboard was
a. a technological innovation, a plow that allowed deeper turning of the soil.
b. a technological innovation, a water-driven mill for grinding grain.
c. a nickname for the first school established by Charles Martel in France.
d. the peasant council that determined the division of land and labor in a peasant village.
e. a system of justice common to the manorial regime of the medieval West.
Answer: A