The Convoy System was used to protect merchant ships ~ look to the related link below .
Wolfpack
German U-Boats are submarines. In World War 2, the Germans used these submarines to attack in groups of three or more. The Germans called these groups of submarines "wolfpacks". The Americans, British & Canadians also used the name "wolfpack" to refer to a group of German U-Boats.
The German Allies surrenedered because they want peace, and then the allies killed them all.
True
No
They sided with the allies: USA, Great Britain, France, Canada, And others
Italy was once on the German side, but changed to the Allies. i think...
Allied punishments weakened the German Economy after World War 1, while Allies helped revive the German economy after World War 2.
No they were allies
Very well
Yes
the central powers or the triple allience