Science, politics, and society.
D004989:Ethics; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D011057:Politics; D012586:Science / Q000266:history; D012945:Social Values; D014857:Warfare