alt Hacker NewsIt doesn't need to be unique, you can't just look at a dispute between the UK and another country and dismiss that other country on the base of an history of slavery.
PS: my question would be how many other countries you think were ahead of the UK in terms of trade slave when it was all the rage for European countries ?
Spain was considerably more exploitative than Britain at first, in the South American gold & silver mining trade, to name one example.