Which of the following groups were considered "new immigrants" on the eve of the Civil War?

Name: Which of the following groups were considered "new immigrants" on the eve of the Civil War?
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On the eve of the Civil War, all of the groups listed (Irish, Polish, and German) were considered "new immigrants." These groups came to the United States mostly in the mid-19th century and faced discrimination and challenges in assimilating to American culture.

Which of the Following Groups Were Considered "New Immigrants" on the Eve