Not very "technically accurate", since it does not represent (at least some?) vassal states differently from their suzerain. For example, compare this [1] map of the Ottoman Empire with the one in this atlas.
Yes, there are several errors. For example, the Gold Coast did not include any part of German/French Togoland. The Gold Coast added some of that territory when it became Ghana in 1957
prmph|3 months ago