During the Civil War what were the meetings called where soldiers could share their faith in God

Major difference between benito mussolini and adolf hitler?

Who was the first president of the united states (just trying to y’all get points)

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.