Question

U.S. immigration rates were particularly high from a.1800 to 1815. b.1820 to 1825. c.1830 to 1840. d.1845 to 1860.

Answer 1

d.1845 to 1860.

Step-by-step explanation:

U.S. immigration rates were particularly high from 1845 to 1860. Most of them were Irish which was over a million and a half; about same number of German people too; reason being is unsuccessful revolution in German which cause a major impact for emigrants from Germany.