Between 1856 and 1863, which monk tested thousands of pea plants in his monastery garden?

Between 1850 and 1864, the Taiping Rebellion claimed an estimated 20 million or more lives in which country? By 1889, the number of which animal on the American plains had fallen from tens of millions to only a few hundred? Between 1853 and 1856, commissioners bought land for which 843-acre New York City park? Between 1856 and 1860, nearly 3,000 members of which faith set out from Iowa and Nebraska to Utah pulling handcarts? Between 1865 and 1885, which empire took over the area of present-day Turkmenistan? In the years after the Civil War, huge numbers of which cattle were driven up the Chisholm Trail from Texas to Kansas? Benjamin Disraeli was British prime minister twice. Which rival held the office four times? In the 1870s, Friedrich Nietzsche visited Richard Wagner in which Bavarian town northeast of Nuremberg, where the compo…