It?s also nice to see that other countries had a positive view of American history at one time, rather than the negative view of it we seem to be intent on broadcasting to the world nowadays.
Its a matter of runaway self criticism coupled with complete denial of the fact that all races and nations practiced slavery long before the first White Europeans ever learned of the Americas. It also distracts attention from the fact that slavery is still practiced in some parts of Africa , Asia and the middle east.