The Second Bank of the United States, located in Philadelphia, Pennsylvania, was the second federally authorized Hamiltonian national bank in the United States during its 20-year charter from February 1816 to January 1836.
Information in the link below:
https://www.history.com/this-day-in-history/germany-resumes-unrestricted-submarine-warfare
I don’t know your question so I can’t help you sorry
Because it was a threat to American citizens. It was close enough to do major harm.
By their nannies or governess