Why did slaves have different experiences of working on plantations? at least a paragraph pls

In terms of any encampment or places of enslaved labor, the outcome and treatment is all set with a control and variable. What is the benchmark as to what is being measured and what is applied to see the variance of the outcome. If all jobs and tasks asked to complete are the same for all subjects being studied then the outcome should be within the same variants as the next on all across the statistical data that is collected from the research.

Explanation:

they died because of a disease during the first spanish colonies.