Between 1820 and 1860 the United States underwent three (1)...........changes: waves of immigrants flooded the port cities; the Anglo Saxon population greatly increased, and cities grew with a rapid tempo. Proud (2)............of the old(3)..........felt that those changes, taken as a whole, constitutes a threat to American society. The massive (4).............was larger and more rapid than that of the past. No legal (5)............inhibited the stream of those (6)............ a new life in the Atlantic. About 5,000,000 immigrants came to America between 1820 and 1860, half of them (7).......... after 1850. A small nation of 10,000,000 in 1820 was (8)...........into a giant of 31,000,000 in 1860. Many of the (9)..........brought with them a way of life which (10)..............radically from that of America.

1. A. signifies
B. signifying  
C. significance
D. significant
2. A. defendents
B. defendants
C. defenders
D. defendings
3. A. publicity  
B. publicant
C. republican
D. republic
4. A. immigration
B. immigrant
C. immigrating
D. migrating
5. A. restricts
B. restrictions
C. restrictations
D. restricters
6. A. seekers
B. seek
C. seeking
D. seeked
7. A. arrived 
B. arriving
C. arrive
D. arrival
8. A. transforming
B. transformed
C. transformant
D. transformable
9. A. newcomers
B. comers
C. recentcomers
D. newlycomers
10. A. differing
B. differed
C. differ
D. differs