Sinking w/o warning (un-restricted submarine warfare).
The shrine houses Japanese soldiers, which includes war criminals.
Korea
Because the cause/s of war is/are controversy in beliefs.
Slavery in gained territories.
The military draft effected everyone's lives.
The submarines attacked Pearl Harbor
It sank up to 2,779 ships in world war 2
The Germans then threatened to use only Uboats for war and blew up a few ships.
The shrine houses Japanese soldiers, which includes war criminals.
Not much controversy at the time, more later in the decades after the war. There are many myths and misstatement of facts surrounding this event during WW2.
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.
Korea
The slavery controversy refers to the heated debate and conflict surrounding the institution of slavery in the United States leading up to the Civil War in the 19th century. It involved arguments over the morality, legality, and economic impact of slavery, ultimately leading to a war between the Northern and Southern states. The controversy ultimately resulted in the abolition of slavery in the United States.
Coco Chanel was known to have a conservative and right-wing political view. She maintained a close relationship with members of the Nazi party during World War II, leading to criticism and controversy surrounding her political affiliations.
The second front controversy refers to the debate surrounding the Allied decision during World War II to open a second front against Nazi Germany in Western Europe. Many, particularly the Soviet Union, criticized the Allies for delaying this action, arguing that it prolonged the war and increased Soviet casualties. The controversy highlighted the complexities of wartime strategy, alliances, and the differing priorities of nations involved. Ultimately, it underscored the geopolitical tensions that would shape post-war relations, particularly between the Soviet Union and the West.
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.
Much of the East coast was blacked out as Nazi Uboats were sinking shipping all the way from NY to FL. They also did some shelling with their small deck guns.