Answer: books, journals, brochures, magazines, news site, newspaper and etc.
Explanation: Your research resources can come from your experiences; print media, such as books, brochures, journals, magazines, newspapers, and books; and CD-ROMs and other electronic sources, such as the Internet and the World Wide Web. They may also come from interviews and surveys you or someone else designs.
Theme: that you should always show the passage if u want answers about it
Answer:
the author's purpose is to persuade readers that sugar production created a system that relied on slavery but also paved the way for revolution