What role did European markets play in sustaining slave trade economically?

Correct answer: They maintained demand for goods like sugar coffee and tobacco

European markets helped sustain the slave trade because consumers and businesses continued to demand plantation goods such as sugar, coffee, and tobacco. To meet this demand, plantations sought a large and controlled labour force. Enslaved labour was imposed through violence and treated as a source of profit, so merchants and plantation owners had strong financial reasons to maintain the system. Market demand therefore connected everyday consumption in Europe with exploitation in the colonies.

Closing plantations would not describe the role of markets; it would weaken the economic system that depended on them. Markets also did not grant civic rights to enslaved people or end the National Convention. The key relationship is demand leading to profitable production, and profitable production encouraging the continuation of slave trading. Hence choice A is the correct answer.