Women were asked to work in factories during world war i because most women could be paid less than men. most men refused to do factory work. most men were away fighting in the war. most women did not want to be alone.

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.