Which year should be remembered for the final abolition of slavery?

Correct answer: 1848

The direct answer is D: 1848. In the French colonies, slavery was abolished by the revolutionary government in 1794, but Napoleon later restored it in several colonies. Thus 1794 was an earlier abolition, not the final lasting one. Slavery was finally abolished in the French colonies in 1848. Option D is correct because the question asks for the final abolition. Option A, 1789, marks the beginning of the French Revolution, not final abolition. Option B, 1791, belongs to the revolutionary period but was not the final abolition year. Option C, 1794, is important because it marks the first abolition by the Convention, but Napoleon's restoration means it was not final. The useful memory chain is: 1794 abolition, Napoleon restored slavery, 1848 final abolition.