I never knew that, @Kardamom! Very interesting. I think most people make the same assumption as the OP: that it has something to do with Germany.
There’s more here.
When I was a youngster in a suburb of Boston, my father used to take us on Sunday drives. We particularly liked the route that took us past the Baker’s Chocolate Factory, where the air was suffused with the delicious aroma of chocolate. I’ve just read that the factory moved decades ago, and the old place has been converted into rental apartments. I think I might like to live there. I wonder if it gives you chocolate dreams.