There is problem with the date legend. For some reason, WWII seems to correctly start around 1939, but France is still completely occupied in 1954, and divided in two (I'm not sure what the colours mean) until 1960?
Also, France is shown occupying Belgium and large parts of Germany and the Netherlands in 1763 as well as Italy and Prussia right from 1789? Illyria in 1798?
This is all off by decades, so while the animation is nice, it should not be taken too much as educational.
France being divided into two colors in the mid 20th century was likely pointing to Vichy France (the government set up after the Nazi invasion of France in 1940). While most of France was de jure controlled by France, the northern and Western areas were continuously occupied by the Germans and this distinction is usually noted in WW2 maps and maps of Vichy France
That's probably what was intended, but the Vichy "territory" disappears on this map in 1948 (which is absurd, that was actually in 1942) and did not reappear later - especially not with a different territory: Vichy didn't control the Atlantic coast, while it is included in the south part of the divided territory from 1955 to 1958 here.
It might instead be showing the advance of the US forces, and their retreat while the legitimate French government regained progressive control. But even disregarding the widely off date, the areas shown are very rough and inaccurate. Especially compared to the detail achieved in Italy and HRE in the previous centuries. I really don't think the quality of this visualisation is very good.
Also, France is shown occupying Belgium and large parts of Germany and the Netherlands in 1763 as well as Italy and Prussia right from 1789? Illyria in 1798?
This is all off by decades, so while the animation is nice, it should not be taken too much as educational.