Answer: They had to speak like Americans did, they had to eat what Americans ate, they had to dress like Americans dressed, they had to celebrate what Americans celebrated if they wanted to fit in.
Explanation: Immigration to the U.S. in the Late 1800s. Between 1870 and 1900, the largest number of immigrants kept on coming from northern and western Europe including Great Britain, Ireland, and Scandinavia. But "recent" immigrants from southern and eastern Europe were becoming one of the most important drives in American life.