The answer to this question is Carolina
Carolina has the perfect climates that needed to produce good quality grains/crops such as rice and indigo.
Since it opened up a lot of production opportunity, the region also require a lot of labor forces to work in the plantations, which they mostly get from slaves.
<span> D. forbade the use of U.S. troops in Cambodia and Laos
</span>
The valleys and majestic hills