Less than 400.
It sank up to 2,779 ships in world war 2
The submarines attacked Pearl Harbor
because of the alliances the US had made previous to the start of the war along with the threat of the German Uboats attacking US civilians and property.
The Germans then threatened to use only Uboats for war and blew up a few ships.
Uboats were made to attack and sink merchant ships carrying supplies to Great Britain. Germany knew if they managed to cut Britain's supplies off then they would be unable to continue the war. They did this by launching torpedos which blew holes in enemy ships under the waterline, causing them to take on water and sink. As the war progressed, more and more were built to combat military ships as well as merchant vessels. Hope this helps.
in what country did the world war 2 start and what were the allies?
millions
About 50,000
q35445364375756673
Well the world war 2 memorial is made from stone , the stars on the other hand are made from bronze metal, and their may be many more materials.
600,000 were made by Willys 1941-1945
If there were U-boats in the Black Sea they could have traveled throug the Mediterranean Sea, the Aegean Sea, the Sea of Marmara, the Hellespont, and the Bosphorus into the Black Sea.