Poland

The dance is just the French adjective for Polish.

French named the dance polonaise, the feminine of Polish, and English borrowed it whole. Chopin then made it a concert form.

A Polish queen of France made the shape fashionable at Versailles.

The form came out of eighteenth century Poland and reached France with Maria Leszczyńska, the Polish wife of Louis XV, where cabinetmakers called it a lit à la polonaise. Unlike a four poster, its canopy is much smaller than the bed and hangs from curved iron rods. The bed was normally pushed lengthwise against a wall so that it could double as a daybed.

Marie Curie named it for a country that did not exist on the map of 1898.

Marie and Pierre Curie identified polonium in July 1898 in the residues left after extracting uranium from pitchblende, and it was the first element they found by following radioactivity rather than chemistry. Curie named it for her partitioned homeland, which had been divided between Russia, Prussia and Austria since the 1790s. It was a deliberately political choice and the first time an element had been used to make one.