马克·吐温 (1835— 1910 )所处的时代是美国 1776年建国后的半个多世纪直到 2 0世纪的初叶。这一时期 ,美国经历美墨战争、南北战争 ,国家基础趋于巩固 ,国土扩张 ,国力增强 ,工业革命蓬勃发展。废奴运动带动农业生产的增长。 185 3年 ,美国海军打开日本门户 ;1898年 ,美国占 The era in which Mark Twain (1835-1910) lived was the first half of the United States from more than half a century after its founding in 1776 to the turn of the 20th century. During this period, the United States experienced the U.S.-Mexico War and the Civil War, its national foundation tended to be consolidated, its territory expanded, its national strength strengthened and its industrial revolution thrived. The Abolition Campaign Drives the Growth of Agricultural Production. In 1853, the United States Navy opened its Japanese gateway; in 1898, the United States accounted for