Final answer:
The passage provides empirical evidence that the sugar trade involved much of the world, detailing the global exchange networks and the central role of sugar in this trade. It emphasizes both the economic significance and the human cost of the trade, especially the reliance on enslavement.
Step-by-step explanation:
The sugar trade was a complex global system that involved the exchange of goods and labors across multiple continents. The passage suggests empirical evidence of the extensive networks by showcasing the cargo that traveled between India, Europe, and Africa, thus supporting the idea that the sugar trade was indeed global. It describes the triangular trade system, wherein European goods were exchanged for African captives, who were then sent to the Americas to work on plantations, producing sugar and other crops, which were then sold back in Europe or European colonies. This trade generated considerable profit for European merchants at the expense of the enslaved individuals and the local populations where these commodities were produced.
The authors' purpose in the discussed passage from 'Sugar Changed the World' seems to be to persuade the reader of the enormity and brutality of the sugar trade system, which was built on the backs of enslaved laborers, and to illustrate how it stimulated global commerce and the exchange of goods, while also highlighting the darker aspects of this trade, notably the reliance on slavery and the seeds of revolution sown by this exploitative system.