How many major "waves," or periods, of immigration did the United States

experience after the Civil War?1. five

2.0ne

3. three

4. two

4. Two

Explanation:

- The first major wave of immigration occurred in 1815

The majority of the immigrants come from Ireland, which accounted for around 33% of the total immigrants in that year. German immigrants took the second place with around 5 million people in total.

- The second major wave of immigration occurred in 1880

The majority of immigrants come from east and central Europe. Around 4 million people from Italy and 2 million Jewish people came to united states during this period.