Why was it difficult to accurately count the number of European immigrants to the U.S between 1840 and 1910?
A) European immigrants didn't have the correct documents.
B) Ellis Island had to process too many people at a time.
C) Europe experienced frequent boundary changes.
D) Many didn't stay very long.
E) They didn't have computers back then.
Question 2
About 20 million people from ________ and ________ have immigrated to the United States in the past half-century.
A) Mexico, Canada
B) Latin America, Asia
C) Asia, Europe
D) Asia, Africa
E) Latin America, Europe
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