22 giug 1915 anni - Germany declares unrestricted submarine warfare
Descrizione:
In 1915. Germany declared that it would attack other ships that their submarines saw. They felt that this way they could cut off supplies to the Allied Powers. They would attack passenger ships, but soon the Germans saw that they were carrying aid for the Allied Powers.Aggiunto al nastro di tempo:
Data:
22 giug 1915 anni
Adesso
~ 110 years ago