Why is it a serious factual error to omit Africa from triangular slave trade?

Correct answer: Because Africa was the key link for slave purchase and Atlantic transport

The direct answer is A: Africa was the key link for buying enslaved people and transporting them across the Atlantic. Triangular trade was a connected system involving Europe, Africa and the Americas. European merchants carried manufactured goods to Africa, obtained enslaved Africans, transported them to plantations in the Americas, and brought plantation goods such as sugar and coffee to Europe. Therefore, removing Africa breaks the factual chain and gives an incomplete picture. Option A is correct because Africa was central to the capture, purchase and Atlantic transport of enslaved people. Option B is wrong because the French National Assembly was a political institution in France, not Africa. Option C is wrong because the Bastille was a prison and fortress in Paris. Option D is wrong because convent education has no connection with the structure of triangular trade. Memory cue: remember Europe–Africa–Americas as the three points of the triangle.