The "new immigrants" primarily came from southern and eastern Europe, as opposed to older immigrants who mostly came from northern and western Europe. The new immigrants, who were primarily Catholic and Jewish, originated in the Balkans, Italy, Poland, and Russia.
The majority of immigrants between 1870 and 1900 continued to come from northern and western Europe, particularly Scandinavia, Great Britain, and Ireland. However, "new" immigrants from southern and eastern Europe were quickly taking on a significant role in American society.
The first immigrants to North America came from Asia thousands of years before Europeans started sailing across the wide Atlantic and settled there in large numbers. They were Native American ancestors who arrived in North America from Asia at least 20,000 years ago, near the end of the last Ice Age.