Normally I would say Babylon, but....
I remember the treatchery of the evil Babs in starting the Domino Wars (tm).
I remember the crying mothers as their sons ran off to volunteer for the first Immortal battalions.
I remember the blood shed, on both sides, due to a senseless conflict started by the Babs.
Worse yet, I remember having to put a halt to construction of the Royal PDX Golf Course because of that war, and dammit, the Babs are gonna pay!
Lets take Germany, build panzers, and dominate the world! Vroom! Vroom! Bang! You're dead Hammburi!
Okay, so CT is right, perhaps Germany brings out the conqueror in all of us....but darn it, those Panzers are just sooooo much fun!