>> The only nation in your list that benefitted greatly from slave labour is the USA I do not know for other countries but in France what is told in schools an

>> The only nation in your list that benefitted greatly from slave labour is the USA I do not know for other countries but in France what is told in schools and in media is that France had abolished slavery in 1794. However it had slavery inscribed in its legal system for West Africa up until the beginning of the 20th century. Even in metropolitan France, slavery was reinstated by Napoleon in 1802 and was not abolished for good until 1848 (in metropolitan France!). In west Africa it was only in the beginning of the XX century that an end of slavery was declared by the colonial French administration ( 1905 in Mauritania). In African states like Mali that are still controlled by France, at least by its military forces and its financial system (CFA/West African Franc), slavery was only legally forbidden in 2003.