English oppression and the Potato Famine drove 1.5 million Irishmen from their homelandto the United States in the period between（ ）.
A、1810 and 1820
B、1845 and 1854
C、1860 and 1890
D、1965 and 1970
【正确答案】：B
【题目解析】：For example, the 3 million who arrived between 1845 and 1854 landed in a country of only about 20 million people, so they represented about 15 % of the total population. English oppression and the Potato Famines of 1845-1849 drove 1.5 million Irishmen from their homeland to the United States in the decade of 1845-1854.
