Answer:
Colonies began to prefer enslaved Africans to indentured servants as a source of labor because slaves were treated as property for life, but indentured servants would one day be free.
Slavery was more than a labor system; it also influenced every aspect of colonial thought and culture. The uneven relationship it engendered gave white colonists an exaggerated sense of their own status.
The introduction of slave labor into the New England household economy enabled its expansion from small-time farms to large agricultural production, the expansion of local and regional markets, widespread entrepreneurial activity, and the rise of manufactories.