In 1872, which composer conducted his opera "Aida" at La Scala in Milan?

In 1852, which hero of Veracruz in the Mexican War was the Whig Party's presidential nominee? In 1862, the Union captured which Louisiana capital, prompting the Confederates to move the state capital to Opelousas? In 1865, which New York Tribune editor, who left school in his teens, urged young people to head to the frontier? In 1869, which Austrian monk published a paper on hawkweed, whose experiments didn't work as well as his ones with peas? In 1885, which Sioux leader was allowed to leave the reservation to tour with Buffalo Bill's Wild West show? In 1896, Thomas Sperry and Shelley Hutchinson started the first independent company to provide what to retailers? In 1903, future president Franklin Roosevelt was elected to head which Harvard student newspaper? In 1909, Roald Amundsen hoped to be the first to reach which place, only to hear that Robert Peary claimed to have beat…