Briefly explain one specific historical reason for a difference between the United States reaction to the international events following the first world war and following the second world war

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.

Select all the correct answers. what were two effects of the french revolution in france?

What was a northern objection to the kansas-nebraska act?