In modern society and what do we mean when we refer to the division of labor

Transitioning countries must take into account the costs of capitalism, because they will experience its as the great depression's and they experience its benefits.

Which statement describes the middle passage

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.