Final answer:
Half of the immigrants to the United States from 1901-1920 were from Europe, during a time when many sought better economic opportunities and escape from persecution.
Step-by-step explanation:
Nearly one-half of immigrants to the United States from 1901-1920 were from Europe. Throughout the nineteenth century and continuing into the first decades of the twentieth century, a significant wave of immigration originated from Europe, driven by people seeking better economic opportunities, as well as those fleeing poverty, violence, or religious and political persecution. Many European immigrants were from nonindustrialized or agricultural regions such as southern Italy and Sicily, and a considerable number were also Jewish individuals escaping the pogroms in the Russian Empire.