A portion of which avenue between the Capitol and the White House was designated a national historic site in 1965?

Which name is on a popular brand of English muffins? Which populist became Louisiana's governor in 1928? What word names a portable lamp or a green-garbed DC Comics hero? Crater Lake, with its cinder cone Wizard Island, is in which state's only national park? Which revolutionary year is written in Roman numerals as MDCCLXXVI? War between India and which country was averted, at least for the moment, by talks in June 2002? A potato famine during the 1840s caused which island's population to fall by about 2 million? Which egg delicacy from Russia and Iran is one of the most expensive foods in the world?