In a treaty signed on December 1, 1887, China recognized Portuguese rule over which territory?

The Chimu people of Peru were conquered by which empire in the 1400s? Chin Ho Kelly, Ben Kokua and Danny Williams were characters on which TV series? China and Greece did not adopt which calendar until the 20th century? In 1900, Chinese fighters attacked foreigners and Christians in which uprising? China's Grand Canal connects which two great rivers? The Jianwen and Wanli emperors ruled during which Chinese dynasty, also famous for its porcelain vases? The Great Wall failed to keep out which Mongol conqueror, who invaded northern China in the early 1200s? Chinese-born actress Joan Chen played the wife of emperor Pu Yi in which Oscar-winning 1987 epic?