Bornholm should be Danish;
Helgoland should be British;
The Afsluitdijk shouldn't exist - there might be other bits of the Zuiderzee Works that need removing;
I think the Duchy of Luxembourg should be at its pre-partition of 1839 borders (i.e. including Belgian Luxembourg, which is separate here);
The dams on the Dnieper, Volga and Don (and the reservoirs behind them) didn't exist;
Jan Mayen was unclaimed until the 1920s;
Svalbard was unclaimed until the 1920s;
Franz Josef Land was undiscovered;
There are some white (#FFFFFF) pixels around Rügen, Usedom, Lake Gardno;
There is a dark blue pixel at 2498, 744 in Sweden;
There are three pink-grey (#D6C0C0) pixels at 2450, 778 in Sweden;
There are two Danish-coloured (#00FFFF) pixels at 2304, 1083 in Sweden;
There is a grey (#C1C5CF) pixel at 2804, 454 in Norway;
There is a dark grey (#787879) pixel at 3903, 1049 in Russia;
And at 3552, 1559 and 3568, 1565;
There is a lighter green (#077607) pixel at 3513, 1809 just on the coast of the Ottoman Empire;
There are four Ottoman-coloured (#003C00) pixels at 3211, 1971 just outside the Ottoman border;
There is a lighter green (#077607) pixel at 2957, 1958;
There is a grey (#595959) pixel at 3128, 1512;
And the administrative border between Crimea and the rest of Russia;
There is a lighter green (#077607) pixel at 2863, 1668;
Two light grey (#A2B3DE) pixels at 2708, 1878;
There is a slightly differently blue (#B6DCF4) pixel at 3920, 2367;
There is a British-coloured (#FF9090) pixel at 1765, 1384 in France;
There are some green (#66CC00) pixels at 2659, 910, 2677, 908 and 2679, 908 in the Gulf of Finland;
There are some grey (#D9D9D9) pixels at 2661, 1308 and 2657, 1303 on the Austria-Congress Poland border;
I'm not sure what the small state on the Bavaria-Austria border is at 2203, 1433? It's the same colour as what I think is Saxe-Lauenberg;
I don't mean to detract from very good work on your part. I am just a massive nitpicker.
