In the early 1800s, the US was relatively new (25 years old), and so had not developed into an industrial economy. Cotton farming was widespread during the period as the conditions in the south permitted it, it was vital for the industrial revolution in Europe and was easily grown and cultivated.
So basically Cotton farming is your answer :)
Explanation:
2.Indian agriculture employs many people, and is a leading exporter of many
agricultural products
D. The court affirmed the idea of “separate but equal.”