George Ernest Morrison, an Australian, traveled the "five-foot roads," or foot paths, from Shanghai to Rangoon in 1894, ______ China before it was engulfed in a century of revolution, war and political tumult.

单项选择题The last half of the 19th century ______ the steady improvement in the means of travel.

单项选择题Lincoln, who many regard as one of our great presidents, was often ______ despite his reputation of telling good jokes.