What was the relation between the prosperity of French trading cities and slavery?

Correct answer: Some ports profited from slave trade and colonial trade

French Atlantic ports were connected to trade with colonies and to the movement of goods across the Atlantic. Some ports, especially Nantes and Bordeaux, gained wealth from commercial networks that included the slave trade. Ships, merchants, financiers, and plantation products all formed part of this profitable system. Thus, the prosperity of certain trading cities was connected to colonial exploitation, even though not every person in every city directly participated in it.

Option A is correct because some ports earned profits from both slave trading and colonial commerce. The other options use absolute or historically incorrect claims. Ports did have important relations with colonies, trading cities did not collectively end slavery in 1789, and opposition to slavery was not shared by all of them. The question highlights the economic interests behind resistance to abolition.