Answer: I think it is D
Explanation:
B is the Aegean sea
A Is the Ionian sea
C Is also the Aegea sea
That only leaves D to be the Mediterranean sea
The lack of discipline is the answer
Germany signed the Treaty of Versailles located in france
A. Urban II
These incursions prompted the emperor of Byzantium, Alexius I Comnenus to send a delegation to Piacenza, Italy, asking Pope Urban II in March 1095 for help against the Turks. On November 27, 1095, in Clermont, France, Pope Urban II called for a crusade to help the Byzantines and to free the city of Jerusalem.