How did trade in the Shang dynasty differ from trade in Egypt and Mesopotamia?

Which of the following descriptions is an example of the curtual diffusion

Why did european nations face financial challenges after world war 1?

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.