Answer :
From 1820-1860, most of the immigrants that came to the United States came from D. Great Britain.
Explanation:
1. During the early to mid-19th century, a significant number of immigrants arrived in the United States from various countries.
2. Among these immigrants, the majority came from Great Britain during the specified time period of 1820-1860.
3. Factors such as economic opportunities, industrialization, and social conditions in Great Britain at the time contributed to the large influx of British immigrants to the United States.
4. These immigrants played a vital role in shaping the cultural and demographic landscape of the United States during that period.
