Along with James Fisk, which financier tried to corner the gold market, causing 1869's "Black Friday"?

Who reportedly shouted "Sic semper tyrannis! The South is avenged!" in 1865? In 1868, which president granted an unconditional pardon to all who had rebelled in the Civil War? Which 1868 Wilkie Collins novel is about a mysterious stolen gem? Which Paris music hall, famous for risque revues, opened in 1869? Who commands the submarine Nautilus in Jules Verne's 1870 novel? Which title heroine remembers the man run down by a train on the day she first met Vronsky? Complete the title of Edward Lear's 1871 poem: "___ and the Pussy-cat". In Lewis Carroll's 1871 poem, the Walrus is accompanied by whom?