Final answer:
Enslaved people began organizing revolts to regain their freedom in the late 18th and early 19th centuries, with famous examples such as the Haitian Revolution and the Nat Turner Rebellion.
Step-by-step explanation:
Enslaved people started organizing revolts to regain their freedom in various periods of history, but the most significant revolts occurred during the late 18th and early 19th centuries.
One well-known example is the Haitian Revolution, which began in 1791 and led to the establishment of Haiti as the first independent black republic in the Western Hemisphere.
Another notable revolt was the Nat Turner Rebellion in 1831, where Nat Turner, an enslaved African American, led a rebellion against slaveholders in Virginia.
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