Points of interest:
For France, former Frech West Africa is not recognized as historically owned. Also, if parts of India are recognized as historically owned by Netherlands, Portugal, and even Scandinavia, why they aren't recognized for France?
For England, a large part of Canada isn't green. Not that it's beneficial to settle most of the orange Canadian tiles, but these tiles can get caught in your culture. Also, Nigeria and Ghana are not recongized as historically owned territories, but a single tile of Gambia is. Interesting, however, that parts of Southwest Africa are recognized as hstorically owned territories of Germany, Netherlands, and Portugal.
Parts of Kazakhstan, Primorsky Krai, Karelia and Murmanskaya oblast aren't recognized as Russian. Also, why is extreme north of Russia isn't recognized as historical, not that anyone whould want to settle there?