Between 1820 and 1870, the majority of immigrants to the United States came from what world region?

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Between 1820 and 1870, the majority of immigrants to the United States came from Northern and Western Europe. This includes people from countries such as Ireland, Germany, and the Scandinavian countries. It wasn't until later in the 19th century that more immigrants began to come from Southern and Eastern Europe.

Between 1820 and 1870, the Majority of Immigrants to the United