John deCrèvecœur SAID:
the most famous and important question in American history: “What then is the American, this new man?” The authentic American leaves behind him “all his ancient prejudices and manners, receives new ones from the new mode of life he has embraced, the new government he obeys, and the new rank he holds.” The American “entertains new ideas, and forms new opinions.” Crèvecœur was enthusiastic about this new man whose “labors and posterity will one day cause great changes in the world.”

https://www.firstthings.com/article/2014/03/the-decline-and-rise-of-secular-judaism