By the turn of the twentieth century, the colonies were changing. Sugar still dominated the local economy. But now there were more and more “free” workers—those who had moved off the estates and lived in their own houses, splitting their time between sugar work and their own businesses. There were Indian shopkeepers, traders, and rice growers. The Africans, too, had migrated to the cities, where they became clerks, teachers, or servants in wealthy households. A new society was emerging—one that had its roots in the dark history of slavery but was also moving into the future.
–Sugar Changed the World,
Marc Aronson and Marina Budhos
Which sentence best states the central idea of the passage?

Which quotation from the passage is a detail that best supports the central idea?