What were some major struggles of the tang dynasty?

Most white men in the antebellum south could best be described as a) plantation owners. b) seafaring traders. c) merchants or shopkeepers. d) nonslaveholding family farmers.

How can we stop u.s. military drone strikes from hurting innocent people

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.