Analyze the support for and the resistance to civil right for women, african americans, native americans.

When conducting research for forming a hypothesis, which practice should historians follow?

Summarizing what tasks did the second continental of government

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.