King Christian X of which country rode his horse through the capital daily even after the Nazi invasion of 1940?

In 1659 Christiaan Huygens published a correct explanation of which planet's rings? Christian Nelson of Onawa, Iowa, created which chocolate-coated ice cream bar in 1921? Christian, Rory, Kieran, Quinn, Shane, Dakota and Macaulay are siblings from which acting family? Which Christian community is found principally in Egypt? Which Mexican painter wore a thorn necklace in a 1940 self-portrait that also features a hummingbird? Christina Aguilera, Lil' Kim, Mya and Pink topped the charts in 2001 with which song, a 1975 hit for LaBelle? Christine Armstrong, Luther Van Dam and Hayden Fox were characters on which TV sitcom? Christine Todd Whitman was elected governor of which state in 1993?