According to the video, what does the United States believe the world should do in response to the Arab Spring?

A. The world should do nothing, as there is no threat to US interests.

B. The world should support the protesters.

C. The world should use military force to assist the governments that are under attack.

D. The world should try to bring both sides to the negotiating table to reduce the violence.

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.