What were the most evil nations in history?

[patrick1]

Obviously not a fan of the British Empire but this is pretty laughable. While facets and some actions were evil by today's standards and a smaller number by the standards of the time, a lot of the "evil" results came from neglect, disease, commercial exploitation, and a sharply crafted divide and conquer strategy that made the subjected complicit in their own demise. There were also quite a few positive develops from the Empire. What did the Nazis do good at all, the Autobahn?

Comrade Al Sibboleth, I know you do want to stick around the muck here, but your mention of the euphemism made me curious.  Growing up in history class I never remember hearing about extermination camps or really even death camps. It was only taught as concentration camps. Any idea when these more accurate (for Auschwitz, Sobibor etc) terms gained traction.