County of Holland
State · 1260–1362 CE · at its largest around 1305 CE
County in the Low Countries within the Holy Roman Empire, ruled by its own counts and then the houses of Hainaut and Bavaria before passing to Burgundy.
On its lands while it lasted
- Amsterdam (1300 CE): Capital of Sovereign Principality of the United Netherlands (1814–1814), Netherlands (1815–today).
- Great Famine of 1315–1317 (1315–1317 CE): Years of heavy rain and failed harvests caused mass starvation across northern Europe, killing millions.
More on Wikipedia.