Final answer:
The European demand for agricultural products grown in the colonies contributed most to the increasing use of African slave labor in North America during the 1600s and 1700s.
Step-by-step explanation:
The increasing use of African slave labor in North America during the 1600s and 1700s was primarily contributed to by the European demand for agricultural products grown in the colonies. The colonies relied on slave labor to sustain the production and exportation of cash crops such as tobacco, rice, and sugar. The profitability of these crops drove the demand for African slaves.
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