The correct answer is "To sell to their other colonies."
Many Europeans would use goods taken from the New World to sell to their other colonies.
That is how European monarchies and governments got rich at the expense of their colonies.
First, settlers and colonists exploited the many natural resources and raw materials found in the colonies to make a profit. Then, they exported the rax materials to Europe. There, industries and fabrics transformed the raw materials into goods that were exported back to the colonies. That is how Europe made a lot of money, of course, using the slave trade to send African slaves to the colonies to work for long hours in the farm fields growing crops.
