World history 2.1.4 question 3

Which best describes alexis de tocqueville

The map shows information about river valley civilizations. which feature of this map best the reader determine the distance between two places?

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.