Mesopotamia acquired the people they enslaved primarily through:
c. from war with other areas.
While other factors such as debt (a) and local households (b) may have contributed to the practice of slavery, warfare was a significant source of enslaved individuals in ancient Mesopotamia. Conquests often led to the capture and enslavement of people from defeated cities and regions. Political alliances (d) typically did not involve enslavement but rather cooperation or mutual benefits.