The highest density for a sovereign country<span> would be for </span>Ecuador (53.69 people/km^2)
His official title would have been the Chancellor of the German Reich, but what he was mostly known as, probably what you’re looking for, would be the German Führer. Führer translates to Leader or Guide.
Most of them couldn't afford to pay the tax.
Nobody wanted a nuclear war and both sides were terrified of it