To determine which independence movement lasted the longest, we can look at the durations of each revolution:
- The American Revolution lasted from 1775 to 1783, which is 8 years.
- The French Revolution is typically considered to have lasted from 1789 to 1799, which is 10 years.
- The Haitian Revolution lasted from 1791 to 1804, which is 13 years.
Based on this information, the Haitian Revolution lasted the longest. Therefore, the correct response is:
The Haitian Revolution