Which answer best summarizes the main benefit of slavery to the colonies? slavery secure settlements in the new world against invading forces. buying slaves was a way to immediately improve one's status in the new world. slavery allowed the colonists to use natural resources for maximum profit. owning slaves offered colonists a way to spread out into other parts of the country.

The answer which best summarizes the main benefit of slavery to the colonies is that slavery allowed the colonists to use natural resources for maximum profit. Slavery was used so that plantation owners could put as many slaves on one portion of land, so that they could work the land quickly and efficiently to make as much product as possible within a given time frame. This caused mass production and brought in money to the colonies through manual labor.