Answer:
Mauritania was the last country to emancipate slaves and slavery.
Explanation: In 1905 slavery had came to an end by the declaration of the colonial French government . Despite the declaration it was not applied completely as it was deeply rooted to the African culture. But in 1981 it was completely abolished by a presidential order in Mauritania. However no criminal law was passed to enforce the order. But officially Mauritania became the last country to emancipate slaves.