Question

what gave rise to the slave trade?
the lack of a skilled labor force in the americas and the decline of the west african population caused residents to seek a living elsewhere.
the shipment of gold from the americas to europe caused plantation owners to seek inexpensive laborers.
the death of many indigenous peoples to disease and the planting of labor - intensive crops.
the global expansion of the spice trade and the rise of christianity in the americas.

Explanation:

When Europeans colonized the Americas, many Indigenous people died from diseases brought by the colonizers. Also, the plantation - based economy required a large amount of labor for labor - intensive crops like sugar, tobacco, etc. This led to the demand for enslaved Africans to fill the labor gap. The other options do not directly relate to the main causes of the slave trade.

Answer:

The death of many Indigenous peoples to disease and the planting of labor - intensive crops.