Question

During the summer of 1941. the U.s. fought an "undeclared war." Where was this war fought?

Answer 1

The Atlantic Ocean, primarily in the North Atlantic as the United States used its navy to protect shipments of war materiel to Great Britain and the Soviet Union under Lend Lease. Although the US was technically (and officially) still neutral at this point, this edged them closer to open conflict with Germany's U-boats.