Mussolini is talking to Graziani in the opening when he looks the map of Libya, and says that all the green land is for Italy, but this is a topographical map that shows land greener as it becomes lower by sea level. 90% of the area of Libya is desert.
When Diodiece meets with Graziani and Prince Amadeo about starting peace talks, a map behind him, depicting the Horn of Africa, is inaccurate. The map clearly shows no borders between Ethiopia and the adjoining Italian colonies of Eritrea and Italian Somaliland, a situation that existed only after Ethiopia had been conquered by Italy and was united with the other two territories as the colony of Italian East Africa. However, this did not occur until 1936, and since the film takes place from 1929-1931, such a map could not possibly have existed at the time of the three men's meeting.