Federalism is the division of power between the federal and state governments in the united states. which power is not federalism a. declaring war b. issuing licenses c. collecting taxes or d. running and maintaining public schools

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.