Who did franklin d. roosevelt persuada to approve the establishment of the executive office of the president in 1039

What is intervention ? in government terms

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.

Nazi germany practiced this form of nationalism. cultural religious ethnic political