After declining the throne of Greece, Leopold I became king of which country in 1831?

After conquering which African land around 1650 B.C. did the Hyksos introduce horses and chariots? After much bloodshed, which conquistador founded the city of Lima, Peru, in January 1535? After criminal activities by which secret society was Oklahoma placed under martial law in September 1923? Starting in December 1944, what was Dwight Eisenhower's rank? After defeating the Kuomintang in 1949, Mao proclaimed the People's Republic of China at which square? After developing his Maine Hunting Shoe around 1911, which outdoorsman opened a mail-order business? After Dik Browne retired in 1988, his son Chris took over which Viking comic strip? After disbanding in 1968, which duo reunited in 1974 and had a No. 3 hit with "Rock and Roll Heaven"?