Anatoly Karpov was world champion of which game from 1975 until he lost to Garry Kasparov in 1985?

What is an X-ray image of blood vessels, made using a contrast dye, called? Xenophon's "Anabasis" chronicles the long retreat of Greek mercenaries after fighting for Prince Cyrus of which empire? Which anarchist was deported to Russia in 1919 along with Alexander Berkman, only to find life there no better? Which president was shot while greeting the public in a receiving line at the 1901 Pan-American Exposition? What nickname did Hall of Fame pitcher Mordecai Brown get because of a childhood farm machinery accident? Which curved pasta, often used in macaroni and cheese, is named for an arm joint? Which anatomical term do wine tasters use for a wine's bouquet? Anatomically, the ischium is part of which bone?