the name of a person in spain's colonies in the americas who was an american-born descendant of spanish settlers was a(n)?

How does congress have power over the courts

How did the king kanissa’ai become very rich

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.