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.
D. Livestock and herders. Though it has been proven it was mainly carried by rats that traveled in rice sacks from other places.
You didn't include options but here's the jist - there were many casualties, cities and towns were left in ruins, national identities across Europe were in shambles.