Furious Styles said:
The 20th Century
Never has more blood been shed is a single century
Largely because there was more blood that could be shed. Before the C20, the world's population was barely more than one and a half billion, but relatively, the 19th was just as bloody in some ways... *shrug*
OT: I'm all into military history, so the Classical Era (effectively from the Greco-Persian Wars to the early Roman Empire). I've analysed most conflicts and engagements and the more famous ones half to death, but it's still hugely fun.
But my interests are usually more concerned with people, so it's generally the eras that they lived in that gets my interest by association. So aside from Themistocles through to Hadrian (ish), key personages that I've studied out of sheer curiosity are John Churchill, his good friend Eugene de Savoy, Frederick II, (most from the Napoleonic Era), Helmuth von Moltke the Elder (whose nephew was a ponce in comparison IMO...), von Francois, and most high profile German commanders from WWII.