it was the strongest economy in the world
It was a submarine in World War 1 or 2
A U-boat was a submarine used by Germany in World War 1 and World War 2.
It was a submarine in world war 1 or 2
After World War 2, the US had the strongest economy in the world.
The ME-262.
Underseaboat.
Asdic
The American Navy
american
Was the humboldt a submarine?
underwater submarine