Cimmerians辛梅里安人58
City states, 城市国家，城邦13-15,19-21,90-91,310
Claudius, 克劳迪乌160
Clement V,Pope, 教皇克里门特五世262
Cleon克里昂137
Clovis, 克洛维209,229
Coinage, 硬币、铸币92
Cold War, 冷战 517,518-37;alignments and realignments,排列和组合527,530-31,532-33;arms race,军备竞赛525-27；Third World Bloc,第三世界集团524,527-28;unraveling,终结531-37
Colombia, 哥伦比亚282
Colonization, 殖民91-92,275-76,316-17,329,379-83,418,469,481.See also Imperialism (modern),也见帝国主义（现代）
Columbus,Christopher, 克里斯托弗·哥伦布44,295,303
Communications, 通讯联系62,165,173,423-24,510,526-27,538,545,546-47
Communism, 共产主义414,459-60,500-502,504,509,513-14,516-28,531,541; disillusionment,幻灭518,520,527,528,532. See also Cold War，也见冷战
Compass, 指南针255
Computers,532,535,538,546
Confucianism,儒家6,109-12,169-70,173-74,191,223,225-26,254-55.Seealso Neo-Confucianism,也见新儒家
Confucius,孔子110-12,163
Congo(Belgium),刚果(比属)275,479,480,521
Congo(formerly Zaire),刚果（前扎伊尔）529,540
Congress of Vienna, 维也纳会议431
Constance, Councilof, 康斯坦茨宗教会议263,319
Constantine,Emperor, 皇帝君士坦丁198,207
Constantinople, 君士坦丁堡195,198,206,207,230,241
Copernicus,Nicholas, 4尼古拉斯·哥白尼318,324
Coptic church,科普特教会207
Corneille, Pierre皮埃尔·高乃依375
Cortez, Hernando, 费尔南多·科尔泰斯280,314
Cosmology,宇宙论，宇宙学548,549-50
Cossacks, 哥萨克人329,378
Counter Reformation, 反宗教改革323,
Cretan Civilization, 克里特文明4,42-43,48,50,89-90
Crick, Francis,弗兰西斯·克里克551
Crimean War, 克里米亚战争432,443
Croatia,Croats,克罗地亚，克罗地亚人，540
Cromwell Oliver, 奥利弗·克伦威尔312,323
Crusades, 十字军东征241,250,259,343
Cuba, 古巴526，541
Cultural Revolution(China),文化大革命（中国）533
Cyrus the Great, 居鲁士大帝59,72,75,133
Czechoslovakia, 捷克斯洛伐克498,503,537
da Gama,Vasco, 瓦斯科·达·伽马295,302,303
Damascus, 大马士革214
Dante Alighieri, 阿里菲利·但丁267
Darius the Great, 大流士大帝59,74,133
Darius III, 大流士三世