21 janv. 1917 - Germany announces unrestricted submarine warfare
Description:
Germany goes back to its ways before the Sussex Pledge of indiscriminately destroying enemy ships.This puts America at higher risk as a whole for the protection of its citizens. It also made the war against Germany a more passionate effort.
Ajouté au bande de temps:
Date:
21 janv. 1917
Maintenaint
~ Il y a 108 ans