In 1916, the National Institution for Moral Instruction had a contest to see who could come up with the best morality code. For kids. Evolving views on childhood, child labor laws, patriotism, and eugenics influenced this effort.
Research:

Behind the Scenes Minis: Pacts and Facts
25:06

Louis Le Prince, the Missing Inventor of Motion Pictures
48:10

Catacombs of Rome
40:37