What happened after Japanese soldiers overtook Nanjing? What is this known as?

Unlike european immigrants, chinese immigrants in the 1800s faced

The political, economic, or cultural environment that surrounds an event provides the event with its

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.