One of the most important consequences of Portuguese discoveries was the bl
ack slavery business. A most reputed theologist and jurist of the time, Jua
n de Molina, who had a first-hand knowledge of the subject, made a thorough
analysis of the justness of slavery from a theology and law perspective, w
hile showing himself opposed to the same. His doctrine set basis for future
thought and he must be considered as the first great theorist on black sla
very.