Question

While serfdom and indentured servitude were justified mostly by economic principles, slavery and the encomienda system were justified most by _____.
a. racist principles
b. regional practices
c. religious principles
d. agricultural practices

Answer 1

While serfdom and indentured servitude were justified mostly by economic principles, slavery and the encomienda system were justified most by "a. racist principles," since many slaveowners believed that African Americans could not "help" themselves. 

Answer 2

While serfdom and indentured servitude were justified mostly by economic principles, slavery and the encomienda system were justified most by racist principles.