She was the South Carolinian who, in the mid-1700s, developed indigo as South Carolina's most important cash crop?

The correct answer is Eliza Pinckney

Elizabeth Lucas Pinckney drastically changed the way agriculture was done in South Carolina, she created indigo and revolutionized the way people worked in agriculture, she was the main responsible for the agricultural revolution and the way that agriculture plays a leading role currently in the industry.

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