By what date was it regulation to play the song "Taps" at military funerals?

What was the turning point for the soviets allowing them to regain power and turn back the germans?

John locke would have agreed with all of the following statemens except

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.