Copper has the advantage that unlike iron, which will be consumed completely by rust when exposed to humid air, the oxidation speed slows down with an increasing thickness of the oxidized layer (formed of copper carbonates), until further oxidation becomes negligible.

Well, he was marketing himself as the uniter of the western roman empire which was still remembered around. also, many of those who considered him a conqueror didn't live long enough to pass their attitude.

Quite a lot of subsequent European history was attempts (with varying degrees of success and longevity) to unify chunks of it. Even before Charlemagne, Justinian tried to reconquer the west.

On the other hand some people think the fact that Europe was hard to unify lead to it period of dominance from early modern times to the 20th century.

I first toured the Hamburg Rathaus shortly after playing the recent Indiana Jones game. My most salient observation was that the Rathaus interior was a dead ringer for the Vatican interior spaces in that game: Wide marble gilded and red-carpeted staircases, walls made of art and covered in art with bas-relief everywhere, even the same hardwoods used everywhere as far as I could tell.

Hah!

I wonder how many people here get that reference.

Moin yourself!