Answer:
The largest number of immigrants in the 19th century came from Europe, both in the first half and in the second half of the century. That´s the right answer.
Explanation:
In the first half of the 19th century, between 1820 until 1860, most immigrants to the U.S. were Irish (one third of the total) and German, according to some sources. Since 1870 and until 1900, 12 million immigrants arrived in American soil. Between 1870 and 1880, the huge majority of those new immigrants were from Germany , Ireland and England.
