The Products of Slavery
That Slavery Footprint survey somehow reminds me of the late-18th and early-19th Century English abolitionists who refused to use sugar in their tea because it supported the plantation slave trade. It was called "Sugar Abstention," since the term "Boycott" didn't come into being until the late 1800's. The practice of "boycotting" was named after an Irish land agent of the same name who was apparently cruel enough in his dealings with his tenants that the entire local community shunned him and refused to either work for him or sell him goods (or even to deliver his mail!) You know things are seriously bad when they name something like that after you! The term now-a-days for a prolonged boycott is "moral purchasing."
Oh, I know I said this is the last map three maps ago, but I am adding a couple more! Some of these are not the greatest cartographically, but they do make their point. And as I always say, "A clear map IS a beautiful map."
A little historical perspective...
Slave Trade from Africa to the Americas 1650-1860: Outflow of Africans to the Americas and Europe. This one is from an interesting blog about slavery http://www.slaveryblog.org/
And this really is the last one, just because it is so nice, cartographically (even though the resolution sucks).
TransAtlantic Slave Trade Routes
For those of you with an interest in history (and what right-thinking person doesn't have an interest in history, I ask you!) I also highly recommend the beautiful book "Atlas of the Transatlantic Slave Trade," by Eltis and Richardon, 2010, Yale University Press. It was featured in my "Geography Beach Books" post and one day I will post a review of it. But if you can't buy it, take it out of the library - it is a really special book.