I was recently reading "A Song of Ice and Fire" and it talked about how essentially Daenerys (who was 13 at the time) married a much older, 30 year old man and obviously wed him and had sex with him in consummation. This behavior was obviously apparent in the middle ages and still was in parts of America and Europe in the 1900s with children marrying older adults at 16 or less. What has happened in our history that created this taboo of older adults marrying pubescent children? Why was this originally a normal part of life back then and when was the point in which people stared to say "sex under (Age) is statutory rape and marrying a pubescent child to an adult is wrong"?