Studies of post-victorian sexuality in the 19th century in United States, indicates repressiveness, and its close relative virtual obsession with masturbation...a well defined genre in this period. The dangers of sexual intercourse within marriage became a subject of widespread censure. A general wary attitude toward the dangers of sexual activity, could be seen in the advice of suggesting proper frequency of intercourse.
In the South, civil war and civil rights history was extremely prevalent, and it's only good for kids to know the reasoning behind all the chaos of slavery and the civil war.