Never seen that before, looks like it’s from a movie sorry:(
The answer is C.... because there was 9 members and a senate with eighteen members!
The caravel is one of the most important ships since it is small, highly maneuverable for sailing
The country of Russia was ruled by Tsars/Czars, which include Ivan the Terrible and Peter the Great. he Russian equivalent of an Emperor.
Therefore, your correct answer is: D. Czars.
Good luck with your studies, I hope this helps~!