Two Waves of High Immigration to the United States Are

Two waves of high immigration to the United States are commonly recognized.What are they?

A) inflows of immigrants from Europe in the 1880s and in the 1920s
B) inflows of immigrants from Europe between the 1880s and the 1920s,and from Mexico,Central America,and Asia beginning in the 1960s
C) inflows of immigrants from Mexico and Central America in the 1920s and in the 1960s
D) inflows of immigrants from Europe in the 1880s,and from the American South to cities in the North in the 1920s