The Reintroduction of Slavery in the Fourteenth Century Occurred Largely

The reintroduction of slavery in the fourteenth century occurred largely as a result of

A) continued warfare and the capture of foreign prisoners.
B) the shortage of workers created by the Black Death.
C) papal decrees encouraging a paternal relationship with pagans.
D) movements for Italian naval domination of the Mediterranean and the attendant need of manpower.
E) the importation of slaves from Africa.