a) hunter gatherers who built mounds
The various cultures collectively termed "Mound Builders" were inhabitants of North America who, during a circa 5,000-year period, constructed various styles of earthen mounds for religious, ceremonial, burial, and elite residential purposes.
Your answer for this is B
A- cash crops such as tobacco required many workers.
Yes there is and it is called
The plantation state
The ocean state &
Little Rhody