Answer: The authors are most likely to attempt to answer the question: How did the Age of Sugar differ from the Age of Revolutions?
Explanation: Based on the last sentence in the excerpt, the authors are setting up a discussion of Age of Sugar. They will have to explain how it differed from the Age of Revolutions.
They are likely to also explain what happened during the Age of Sugar that caused Europeans to speak out about equality and slavery, but within the context of what was going on in the different Ages.