 One slave narrative was composed by an Englishman, John R. Jewitt, who had been taken alive when his ship was captured in 1802; his memoir provides a detailed look at life as a slave, and asserts that a large number were held.During the period from the late 19th century and early 20th century, demand for the labor-intensive harvesting of rubber drove frontier expansion and slavery in Latin America and elsewhere.Indigenous peoples were enslaved as part of the rubber boom in Ecuador, Peru, Colombia, and Brazil.