In the United States，the first largest immigration movement took place _______.
A、in the mid-1810s
B、right after the War of Independence
C、right after the Civil War
D、at the turn of the 20th century
【正确答案】：A
【题目解析】：【考点点击】本题主要考查美国移民。
【要点透析】美国第一次最大移民浪潮在1815年发生。P188
