Of course, in East African translation, they would naturally still be addressed as princesses. After all, both were empires; the East African government would not consider Russian princesses to hold any greater status than princesses of the Rhine Royal Family.
Setting aside the Rhine Empire itself, the Rhine Royal Family was a branch of the House of Hohenzollern. Even by European standards, its status could not be low.
Of course, it was inevitable that European countries would look down somewhat on the East African Empire, situated in Africa. After all, every country judged others from the standpoint of its own national interests.
A typical example was Vietnam, a former tributary state of the Far East Empire. In the eyes of the Far East Empire, Vietnam's ruler was at most a tributary king, yet that did not prevent Vietnam from overstepping its bounds and proclaiming itself an empire.
East Africa's situation was more like that of Japan in East Asia. From East Africa's perspective, its own noble order differed from Europe's. After all, this was Africa, so European rules naturally did not count in East Africa. Moreover, unlike those European empires, East Africa had no ties it could trace back to Rome.
Japan was in much the same position. Although regimes had once existed in Japan that professed themselves subjects of the Far East Empire, such regimes were concentrated before the Tang Dynasty and were not representative. At that time, Japan was still at the dawn of civilization, divided among many states rather than represented by a unified Japanese regime.
From the Tang Dynasty onward, although Japan had repeatedly dispatched official envoys to the Far East Empire, it had done so only for learning. In terms of identity, it did not regard itself as inferior to the Far East Empire. This