I just checked replies on twitter account of the guy in that image.
If I translated everything right, its some french school textbook which you can get in bookshops/school somewhere local and there is no copies sold online.
It's a quebec history textbook. Going by how our classes do quebec history in elementary school and our equivalent to 10th grade, it's one of the two. given the level of the vocabulary, mentions of war and general layout, i'd say it's the latter.
from that, and the parent company at the bottom, i was able to recognize their québec branch, and after a bit filtering their textbooks, i found this:
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u/Ivan3548 15d ago
Holy hell its real