Italian and other European immigrants have certainly left their mark on sandwiches on the east coast. It's the best of both worlds. Quality cured meats and US portion sizes.
Whenever I am in Europe I am super impressed with the availability of good cured meats, often from Italy or Spain regardless of what country I am in, and cheaper than the same quality item in the US.
https://www.bbc.com/worklife/article/20190103-the-norwegian-...