Which of the following constitutes an unprecedented result of the latin american revolution

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.

How did the us change it’s economy to provide supplies for the war effort?

Brainliesttt asap!me : describe the responses to terrorism in the united states.