Germany's unrestricted submarine warfare
unrestricted submarine warfare
no
The Titanic
Hitler's dog pooped on his lawn.
The attack on Pearl Harbor was the factor that made the United States decide to enter the war.
Major turning factor to Help WIN it!
it sunk by a torpedo from U-20, a submarine
We danced it out.
complicated systems of alliances
The Japanese bombing of Pearl Harbor, i would say.
The sinking of the Lusitania was a big one.