Where might you expect to find biased information?

What could have been done to stop the illegal voting? what about the violence?

What was the great awakening? a. a religious movement b. a social movement against slavery c. a political rebellion d. a scientific movement

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.