What feature is characteristic of a market economy

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.

What did the french national assembly decide? peasants would only have to pay one-tenth of their earnings to the catholic church. the government could not legally charge taxes without first holding a vote. aristocrats would still receive special privileges as long as they paid a higher tax. employment would be available to all people, regardless of their social class.

Which beat summarizes the intent of franklin roosevelt hundred day legislation and programs